The greatest weariness comes from work not done.

The passion to get ahead is sometimes born of the fear lest we be left behind.

It is the child in man that is the source of his uniqueness and creativeness, and the playground is the optimal milieu for the unfolding of his capacities and talents.

It is remarkable by how much a pinch of malice enhances the penetrating power of an idea or an opinion. Our ears, it seems, are wonderfully attuned to sneers and evil reports about our fellow men.

Starting out from the fact that the frustrated predominate among the early adherents of all mass movements and that they usually join of their own accord, it is assumed: 1) that frustration of itself, without any proselytizing prompting from the outside, can generate most of the peculiar characteristics of the true believer; 2) that an effective technique of conversion consists basically in the inculcation and fixation of proclivities and responses indigenous to the frustrated mind.

Animals often strike us as passionate machines.

It is the individual only who is timeless. Societies, cultures, and civilizations -- past and present -- are often incomprehensible to outsiders, but the individual's hungers, anxieties, dreams, and preoccupations have remained unchanged through the millenia.