Drink because you are happy, but never because you are miserable.

A man was meant to be doubtful about himself, but undoubting about the truth; this has been exactly reversed.

Why are we not grateful to God for filling our stockings with legs?

I came to the conclusion that the optimist thought everything good except the pessimist, and that the pessimist thought everything bad, except himself.

Progress is a comparative of which we have not settled the superlative.

We can be almost certain of being wrong about the future, if we are wrong about the past.

The true object of all human life is play. Earth is a task garden; heaven is a playground.