Phineas Parkhurst Quimby

Quimby was a nineteenth-century Maine practitioner and writer whose surviving papers include notebooks, lectures and essays on mind, matter, religion and his work with people who came to him. He died in 1866, before New Thought gathered into the schools, publishers and organisations through which later readers would encounter it. That timing matters: calling him the movement's founder can make a complicated set of later connections look simpler and more settled than the record allows.

His writings placed mistaken belief and interpretation at the centre of distress, and he presented explanation as a route to bodily change. Those were his assertions, not an account of causation established by later evidence. They also sit close to the history of Mary Baker Eddy and Christian Science, where questions of influence and authorship have been argued over for more than a century. The surviving manuscripts are more useful than a clean origin story because they show a working vocabulary still taking shape.

For a reader interested in manifestation history, Quimby is a reason to read backwards carefully. Ideas about belief, attention and the body did not arrive fully formed as modern self-help, and their later popularity does not validate their strongest claims. The durable practice is simpler: notice which explanation you are carrying, then test whether it helps you meet the next concrete moment.