Quote by Putnam, Hilary
"Our concepts are tools we have created to serve our purposes, and those purposes can change."
More from Putnam, Hilary
"The world is not intrinsically divided into minds and physical objects."
"Realism is not the view that the world exists independently of all schemes of description."
"Truth is not correspondence to reality."
"We can have a rational picture of the world only if we are willing to question our intuitions."