When a contradiction is impossible to resolve except by a lie, then we know that it is really a door.

science has now been for a long time - and to an ever-increasing extent - a collective enterprise. Actually, new results are always, in fact, the work of specific individuals; but, save perhaps for rare exceptions, the value of any result depends on such a complex set of interrelations with past discoveries and possible future researches that even the mind of the inventor cannot embrace the whole.

The joy of learning is as indispensable in study as breathing is in running.

To claim that theft or adultery or lying are "evil" simply reflects our degraded idea of good-—that it has something to do with respect for property, respectability, and sincerity.

A man whose mind feels that it is captive would prefer to blind himself to the fact. But if he hates falsehood, he will not do so; and in that case he will have to suffer a lot. He will beat his head against the wall until he faints. He will come to again

Even if our efforts of attention seem for years to be producing no result, one day a light that is in exact proportion to them will flood the soul.

I would suggest that barbarism be considered as a permanent and universal human characteristic which becomes more or less pronounced according to the play of circumstances.