What Was the ‘Science of Health’? Quimby’s Alternative to 19th-Century Medicine

Introduction

In the mid-19th century, when mainstream medicine still relied on purging, bleeding, and uncertain drugs, a Maine clockmaker named Phineas Parkhurst Quimby developed a radically different approach to illness. He called it the ‘Science of Health’—a system that located the root of disease not in the body but in the mind’s false beliefs. Quimby’s ideas, though never formally systematized in his lifetime, became the seedbed for the New Thought movement and influenced figures from Mary Baker Eddy to Emma Curtis Hopkins, Charles and Myrtle Fillmore, and Ernest Holmes. This article examines Quimby’s ‘Science of Health’ as a historical concept, its origins, its core teachings, and its enduring legacy in the landscape of American metaphysical religion.

Historical Context

Quimby’s work emerged in a cultural milieu ripe for metaphysical experimentation. The early 19th century saw the rise of Transcendentalism, with its emphasis on intuition and the oversoul, and the importation of mesmerism (hypnotism) from Europe, which suggested that the mind could influence the body in mysterious ways. Swedenborgianism, with its doctrine of correspondences between spiritual and natural worlds, also contributed to a climate where mental and spiritual healing seemed plausible. Mainstream medicine, meanwhile, was often ineffective and sometimes harmful, particularly for chronic ‘nervous’ complaints. Patients sought alternatives, and ‘mind cure’ or ‘mental healing’ movements began to emerge in New England, blending metaphysical philosophies with practical therapeutic techniques. According to the Oxford Research Encyclopedia of Psychology, mind cure ‘extolled a metaphysical mind-over-matter approach to the treatment of illness’ and ’emerged in New England in the mid-19th century out of a mix of mesmerism and metaphysical philosophies’ (source: [1]). By the 1880s, it had achieved national recognition. The three individuals credited with creating and popularizing mental healing are Phineas Parkhurst Quimby, Warren Felt Evans, and Mary Baker Eddy ([1]). Quimby’s ‘Science of Health’ was the foundational concept upon which these later developments rested.

Main Narrative

Definition: What Was the ‘Science of Health’?

For Quimby, the ‘Science of Health’ was not a medical system but a metaphysical wisdom that recognized the true nature of the human being as spiritual, not material. He argued that disease is an ‘error’—a false belief held in the mind—and that matter is ‘plastic to thought’ ([3]). In his manuscripts, he wrote that the ‘ordinary or external mind which is spiritual matter’ is the intermediate term between the real man and the physical body. The real man, the spiritual self, is above this mind and can correct its false beliefs. Quimby’s science was therefore a method of ‘correcting the errors of the mind’ to restore health. He distinguished it from mere suggestion or placebo, insisting that it was based on immutable spiritual laws, ‘Wisdom reduced to self-evident propositions’ ([4]).

Origins and Development

Quimby was born in 1802 in Lebanon, New Hampshire, and began his career as a clockmaker and inventor. In the 1830s, he became interested in mesmerism, which was then a popular entertainment and a purported therapeutic tool. Through his experiments with a patient named Lucius Burkmar, Quimby discovered that he could diagnose and apparently heal illnesses while in a mesmeric trance. However, he eventually concluded that the cures were not due to any supernatural power but to the patient’s belief in the healer’s words. This realization led him to develop his own method of ‘mental healing’ that did not rely on trance but on reasoned dialogue and the correction of erroneous beliefs. By the 1850s, Quimby had established a practice in Portland, Maine, where he treated patients by explaining the mental origins of their afflictions. His manuscripts, written between 1846 and 1865, contain his evolving theory. The editor Horatio W. Dresser, who published these manuscripts in 1921, noted that Quimby’s ‘Science’ was ‘that wisdom which, superior to all opinions or wisdom of the world, and all knowledge founded on externals, mere facts or speculation, is Divine in origin; is beyond all doubt, and capable of verification by all’ ([4]).

Who Popularized It?

Quimby himself did not publish his ideas; he left behind a mass of manuscripts. His patients and followers carried his teachings forward. One of his most famous patients was Mary Baker Eddy, who came to Portland in 1862 seeking relief from chronic illness. She studied with Quimby and later developed her own system, Christian Science, which she presented as distinct from Quimby’s. However, the historical record shows that Eddy borrowed extensively from Quimby’s manuscripts, which were loaned to her by Julius Dresser, a follower of Quimby ([2]). Warren Felt Evans, another patient, became a prolific author on mental healing, publishing books such as The Mental Cure (1869) and Mind Cure (1885), which popularized Quimby’s ideas in a more accessible form. The Dresser family—Julius and his son Horatio—also promoted Quimby’s legacy, with Horatio editing and publishing the Quimby Manuscripts in 1921. Through these channels, Quimby’s ‘Science of Health’ became the intellectual foundation for the broader New Thought movement.

How Different New Thought Groups Understood It

New Thought groups interpreted Quimby’s ‘Science of Health’ in various ways. Emma Curtis Hopkins, a former student of Eddy, developed her own ‘Scientific Christian Mental Practice’ that emphasized the power of affirmative prayer and the absolute goodness of God. She influenced the Fillmores, who founded Unity, which taught that the ‘science of mind’ could heal both body and circumstances. Charles Fillmore, in particular, wrote extensively on the ‘twelve powers of man’ and the idea that the body is a manifestation of consciousness. Ernest Holmes, founder of Religious Science, synthesized Quimby’s ideas with those of Emerson and other transcendentalists, creating a systematic philosophy he called the ‘Science of Mind.’ Holmes’s 1926 book The Science of Mind explicitly acknowledged Quimby as a forerunner. While each group added its own terminology and rituals, they all shared Quimby’s core premise: that health is a state of mind and that correcting false beliefs restores well-being.

Related Concepts and Historical Development

Quimby’s ‘Science of Health’ was intimately connected to the broader ‘mind cure’ movement of the late 19th century. The Oxford article notes that mind cure ‘shaped the earliest forms of psychotherapy in the United States’ and ‘advanced therapeutic work within the realm of mind-body medicine’ ([1]). Quimby’s idea that matter is ‘condensed into a solid by mind action’ ([3]) prefigured later New Thought teachings on the creative power of thought. His distinction between the ‘real man’ (spirit) and the ‘external mind’ (opinions) influenced the New Thought concept of the ‘Christ within’ or the ‘divine spark.’ The movement’s development can be traced from Quimby’s Portland practice to the founding of the International New Thought Alliance in 1914, which united various groups, including Divine Science, Unity, and Religious Science. Nona Brooks and Malinda Cramer co-founded Divine Science in the 1880s, emphasizing the immanence of God and the unreality of evil. William Walker Atkinson, a prolific writer under pen names, popularized New Thought ideas in the early 20th century through books like Thought Vibration and The Secret of Mental Magic. Ralph Waldo Trine’s In Tune with the Infinite (1897) became a bestseller, bringing New Thought ideas to a mass audience. These developments all trace their intellectual lineage back to Quimby’s ‘Science of Health.’

Modern Legacy

Today, Quimby’s ‘Science of Health’ is recognized as a foundational concept in the history of mind-body medicine. Its influence extends beyond explicitly religious groups into the human potential movement, positive psychology, and popular self-help culture. The idea that beliefs shape biology—now explored in psychoneuroimmunology—has roots in Quimby’s assertions. New Thought churches continue to teach variants of his science, and his manuscripts are studied by historians of religion and medicine. The concept remains a touchstone for those who seek a spiritual, non-invasive approach to healing.

Why It Matters in New Thought History

The ‘Science of Health’ is not merely a historical curiosity; it is the cornerstone of New Thought’s theological and practical system. Without Quimby’s radical redefinition of disease as mental error, the movement would lack its central mechanism for healing. His emphasis on the individual’s responsibility for their own health anticipated later New Thought teachings on affirmative prayer and visualization. Moreover, Quimby’s method of engaging patients in dialogue about their beliefs prefigured the talking cure of psychotherapy. For students of New Thought history, understanding Quimby’s ‘Science of Health’ is essential because it explains why the movement diverged from orthodox Christianity and embraced a metaphysical worldview. It also clarifies the often-contentious relationship between New Thought and Christian Science, as both claim Quimby as a source but interpret him differently. The ‘Science of Health’ remains a living concept, still taught and practiced in New Thought centers worldwide, and its historical significance cannot be overstated.

Primary Sources

• The Quimby Manuscripts – Phineas Parkhurst Quimby, edited by Horatio W. Dresser (1921). This collection contains Quimby’s original writings from 1846–1865, including his theory of disease and healing. It also includes the copybooks that Mary Baker Eddy borrowed during her time as Quimby’s patient ([2]).
• Chapter 16: ‘Disease and Healing’ – In The Quimby Manuscripts, this chapter outlines Quimby’s view of matter as plastic to thought and his idealistic philosophy ([3]).
• Chapter 19: ‘Science, Life, Death’ – This chapter defines Quimby’s ‘Science’ as divine wisdom and explains his distinction between the changing mind and the unchanging spirit ([4]).
• Mind Cure and Mental Therapeutics in the Late 19th-Century United States – Oxford Research Encyclopedia of Psychology (2020). This secondary source provides an overview of the movement and its key figures ([1]).