Every great advance in science has issued from a new audacity of…

Every thinker puts some portion of an apparently stable world in peril and no one can wholly predict what will emerge in its place.

pp. 407–8; cited in: Hilary Putnam, "Pragmatism and nonscientific knowledge" (2008) in James Conant, Urszula M. Zeglen, Hilary Putnam: Pragmatism and Realism (2012) p. 21

Democracy has to be born anew every generation, and education is its midwife.

While they denounce as subversive anarchy signs of independent thought, of thinking for themselves on the part of others lest such thought disturb the conditions by which they profit, they think quite literally for themselves, that is of …

'Cease conceiving of education as mere preparation for later life, and make it the full meaning of the present life.

As we shall see later, the most important factor in the training of good mental habits consists in acquiring the attitude of suspended conclusion, and in mastering the various methods of searching for new materials to corroborate or to …