Scientific and philosophic truth have parted company.

Even in the darkest of times we have the right to expect some illumination, and ... such illumination may well come less from theories and concepts than from the uncertain, flickering, and often weak light that some men and women, in their lives and their works, will kindle under almost all circumstances and shed over the time-span that was given them on earth.

The point, as Marx saw it, is that dreams never come true.

every political structure, new or old, left to itself develops stabilizing forces which stand in the way of constant transformation and expansion. Therefore all political bodies appear to be temporary obstacles when they are seen as part of an eternal stream of growing power.

Luck serves ... as rationalization for every people that is not master of its own destiny.

The earth is the very quintessence of the human condition.

Predictions of the future are never anything but projections of present automatic processes and procedures, that is, of occurrences that are likely to come to pass if men do not act and if nothing unexpected happens; every action, for better or worse, and every accident necessarily destroys the whole pattern in whose frame the prediction moves and where it finds its evidence.