What's thinking? You live in a grandly appointed house, but spend all your time rummaging around in the attic for any little trinket you hadn't known was there.
Suppose you had to remember to beat your heart, contract in exact sequence the muscles you use for every step. ... Conservatism comes out of the body, the sense of many things being done for us that any attempt to re-think, or even make conscious, would fatally disrupt.
Books serve us simply by opening a window on all we wanted to say and feel and think about. We may not even notice that they have not said it themselves till we go back to them years later and do not find what we loved in them. You cannot keep the view by taking the window with you.
Say too soon what you think and you will say what everyone else thinks.
The drives were nature's first provision: thinking was added later, to get us around the world's obstacles to them.