Believers in free will always, in another mental compartment, believe simultaneously that volitions have causes. ... he implications of the free-will doctrine are not realized by those who hold it. We say "why did you do it?" and expect the answer to mention beliefs and desires which caused action. When a man does not himself know why he acted as he did, we may search his unconscious for a cause, but it never occurs to us that there may have been no cause.
Source: Religion and Science, 1935, chapt. 6
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