Even the development of the steam engine owed but little to the advancement of science.

Behold the turtle. He makes progress only when he sticks his neck out.

... scientific research is compounded of ... empirical procedures, general speculative ideas, and mathematical or abstract reasoning.

A conceptual scheme is never discarded merely because of a few stubborn facts with which it cannot be reconciled; a conceptual scheme is either modified or replaced by a better one, never abandoned with nothing left to take its place.

Just like a turtle, we only make progress if we stick our neck out.

Every vital organization owes its birth and life to an exciting and daring idea.

Public education is a great instrument of social change. Through it, if we so desire, we can make our country more nearly a democracy without classes. To do so will require the efforts of us all-teachers, administrators, taxpayers and statesmen. Education is a social process, perhaps the most important process in determining the future of our country; it should command a far larger portion of our national income than it does today.