The contemporary practices of scientific research, as well as the scientific efforts that the great books record, show beyond doubt that the method of controlled experiment under artificial conditions is not the only method used by men who regard themselves and are regarded as scientists. ... as the work of astronomers, biologists, and social scientists reveals, experiment in the strict sense is not always possible.

We do not seem to get very far by talking about democracy. We know that Germany is not one. She says so. We know that Russia is not one, though Stalin says she is one. We are not sure about some elements in the government of England and France. We are not altogether sure about this country. The reason is, of course, that we do not know what a democracy is or grasp the fundamental notions on which it rests. [...] Is democracy a good form of government? Is the United States a democracy? If we are to prepare to defend democracy we must be able to answer these questions. I repeat that our ability to answer them is much more important than the quantity or quality of aeroplanes, bombs, tanks, flame-throwers, and miscellaneous munitions that we can hurl at the enemy.

In education ... whenever a proposal is made that looks toward increased intellectual effort on the part of students, professors will always say that the students cannot so the work. My observation leads me to think that what this usually means is that the professors cannot or will not do the work ... When, in spite of the opposition of the professors, the change is introduced, the students, in my experience, have always responded nobly.