Some people spend the day in complaining of a headache, and the night in drinking the wine that gives it.

There is no permanence in doubt; it incites the mind to closer inquiry and experiment, from which, if rightly managed, certainty proceeds, and in this alone can man find thorough satisfaction.

Everyone only hears what he understands.

Seize this very minute. What you can do or dream you can do, begin it. Begin it and the work will be completed

Once more I am a wanderer, a pilgrim, through the world. But what else are you?

The force of a language does not consist of rejecting what is foreign but of swallowing it.

When ideas fail, words come in very handy.