I awake with a not entirely sickened knowledge that I am merely young again and in a funny way at peace, an observer who is aware of time's chariot, aware that some metamorphosis has occurred.

Considered now as a possession, one may define culture as the residuum of a large body of useless knowledge that has been well and truly forgotten.

Useless knowledge can be made directly contributory to a force of sound and disinterested public opinion.

The business of a scientific school is the dissemination of useful knowledge, and this is a noble enterprise and indispensable withal society can not exist unless it goes on.

Perhaps the prevalence of pedantry may be largely accounted for by the common error of thinking that, because useful knowledge should be remembered, any kind of knowledge that is at all worth learning should be remembered too.