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

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.

The university's business is the conservation of useless knowledge; and what the university itself apparently fails to see is that this enterprise is not only noble but indispensable as well, that society can not exist unless it goes on.

Life has obliged him to remember so much useful knowledge that he has lost not only his history, but his whole original cargo of useless knowledge; history, languages, literatures, the higher mathematics, or what you will - are all gone.

In America, public opinion is the leader.

As if there wasn't a thousand things that were never heard.