A society coming apart at top and bottom, or passing over into another form, contains just as many possibilities for revelation as a society running along smoothly in its own rut. The individual is thrust out of the sheltered nest that society has provided. He can no longer hide his nakedness by the old disguises. he learns how much of what he has taken for granted was by its own nature neither eternal nor necessary but thoroughly temporal and contingent. He learns that the solitude of the self is an irreducible dimension of human life no matter how completely that self had seemed to be contained in its social milieu. In the end, he sees each man as solitary and unsheltered before his own death. Admittedly, these are painful truths, but the most basic things are always learned with pain, since our inertia and complacent love of comfort prevent us from learning them until they are forced upon us. It appears that man is willing to learn about himself only after some disaster; after war, economic crisis, and political upheaval have taught him how flimsy is that human world in which he thought himself so securely grounded. What he learns has always been there, lying concealed beneath the surface of even the best-functioning societies; it is no less true for having come out of a period of chaos and disaster. But so long as man does not have to face up to such a truth, he will not do so.

~ William Barrett

[At the beginning of modern science], a light dawned on all those who study nature. They comprehended that reason has insight only into what it itself produces according to its own design; that it must take the lead with principles for its judgments according to constant laws and compel nature to answer its questions, rather than letting nature guide its movements by keeping reason, as it were, in leading-strings; for otherwise accidental observations, made according to no previously designed plan, can never connect up into a necessary law, which is yet what reason seeks and requires. Reason, in order to be taught by nature, must approach nature with its principles in one hand, according to which alone the agreement among appearances can count as laws, and, in the other hand, the experiments thought in accordance with these principles - yet in order to be instructed by nature not like a pupil, who has recited to him whatever the teacher wants to say, but like an appointed judge who compels witnesses to answer the questions he puts to them. Thus even physics owes the advantageous revolution in its way of thinking to the inspiration that what reason would not be able to know of itself and has to learn from nature, it has to seek in the latter (though not merely ascribe to it) in accordance with what reason itself puts into nature. This is how natural science was first brought to the secure course of a science after groping about for so many centuries.

~ Immanuel Kant