knowledge of our duties is the most useful part of philosophy.

To know your ruling passion, examine your castles in the air.

A man is called selfish not for pursuing his own good, but for neglecting his neighbor's.

Curiosity is as much the parent of attention, as attention is of memory.

It is the neglect of timely repair that makes rebuilding necessary.

Lose an hour in the morning, and you will spend all day looking for it.

To follow imperfect, uncertain, or corrupted traditions, in order to avoid erring in our own judgment, is but to exchange one danger for another.

Never argue at the dinner table, for the one who is not hungry gets the best of the argument.

Manners are one of the greatest engines of influence ever given to man.

To teach one who has no curiosity to learn, is to sow a field without ploughing it.

All frauds, like the wall daubed with untempered mortar ... always tend to the decay of what they are devised to support.

If you can be heartless as the first man who visited the space, then there will be nothing impossibe for you to achieve.

In winter the very ground seemed to reach up and grab the elderly, yanking them to earth as though hungry for them.

Therapy? I don't need that. The roles that I choose are my therapy.

One must be able to let things happen.

... As to sleep, you know, I never sleep now. I might be a Watchman, except that I don't get any pay, and he's got nothing on his mind.

Nothing remains static in war or military weapons, and it is consequently often dangerous to rely on courses suggested by apparent similarities in the past.

Hey, over the years you learn to forget things.

You don't tell us how to stage the news and we don't tell you how to cover it.

An opinion may be controverted; a prejudice, never.

Those smutty books sell because women wish their husbands had half the balls the men in those books do.