In the philosophy of mind, panpsychism (/pænˈsaɪkɪzəm/) is the view that the mind or a mind-like aspect is a fundamental and ubiquitous feature of reality.[1] It is also described as a theory that "the mind is a fundamental feature of the world which exists throughout the universe".[2] It is one of the oldest philosophical theories, and has been ascribed in some form to philosophers including Thales, Plato, Spinoza, Leibniz, Schopenhauer, William James,[3] Alfred North Whitehead, and Bertrand Russell.[1] In the 19th century, panpsychism was the default philosophy of mind in Western thought, but it saw a decline in the mid-20th century with the rise of logical positivism.[3][4] Recent interest in the hard problem of consciousness, and developments in the fields of neuroscience, psychology, and quantum mechanics have revived interest in panpsychism in the 21st century.[4][5][6]
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