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Quotation from The Principles of Psychology by William James
“Psychology is the Science of Mental Life, both of its phenomena and of their conditions”
The Principles of Psychology, Vol. I, Chapter I: The Scope of Psychology
The book's opening definition, which ties mental phenomena to their bodily conditions.
Citation: "Psychology is the Science of Mental Life, both of its phenomena and of their conditions" — William James, The Principles of Psychology, Vol. I, Chapter I: The Scope of Psychology. (id the-principles-of-psychology-q1)
Portrait: William James by Alice M. Boughton, c. 1907, platinum print, from the National Portrait Gallery - NPG-NPG 87 37James-000001 (cropped), Alice Boughton, Public domain.
