Never tell all you know—not even to the person you know best.

Many homicidal lunatics are very quiet, unassuming people. Delightful fellows.

Everything that has existed, lingers in the Eternity.

Any coincidencce is worth noticing. You can throw it away later if it is only a coincidence.

Time does not dispose of a question - it only presents it anew in a different guise.

The best time to plan a book is while you're doing the dishes.

Truth, however bitter, can be accepted, and woven into a design for living.

Bitterness leads nowhere. It turns back on itself. It is the eternal cul-de-sac.

It's what's in *yourself* that makes you happy or unhappy.

An appreciative listener is always stimulating.

It's not a man's working hours that are important--it's his leisure hours. That's the mistake we all make.

With thought, all problems can be resolved.

To every problem, there is a most simple solution.

Our weapon is our knowledge. But remember, it may be a knowledge we may not know that we possess.

One doesn't recognize the really important moments in one's life until it's too late.

An archaeologist is the best husband a woman can have. The older she gets the more interested he is in her.

The tragedy of life is that people do not change.

If you place your head in a lion's mouth, then you cannot complain one day if he happens to bite it off.

The human face is, after all, nothing more nor less than a mask.