Philosophy . . .consists chiefly in suggesting unintelligible answers to insoluble problems. - Henry Adams

In practice, such trifles as contradictions in principle are easily set aside; the faculty of ignoring them makes the practical man.

Barred from philosophy and bored by facts, he wanted to teach his students something not wholly useless. The number of students whose minds were of an order above the average was, in his experience, barely one in ten; the rest could not be much stimulated by any inducements a teacher could suggest. All were respectable, and in seven years of contact, Adams never had cause to complain of one; but nine minds in ten take polish passively, like a hard surface; only the tenth sensibly reacts.

Man had in the beginning no power of analysis or synthesis approaching that of the spider, or even of the honey-bee; he had acute sensibility to the higher forces. Fire taught him secrets that no other animal could learn; running water probably taught him even more, especially in his first lessons of mechanics; the animals helped to educate him, trusting themselves into his hands merely for the sake of their food, and carrying his burdens or supplying his clothing; the grasses and grains were academies of study.