The past is the best prophet of the future.
The desire to fly is an idea handed down to us by our ancestors who... looked enviously on the birds soaring freely through space... on the infinite highway of the air
Live as if you were living a second time, and as though you had acted wrongly the first time.
Work harder on yourself than you do on your job.
Don't be concerned others not appreciating you. Be concerned about your not appreciating others.
A life not lived for others is not a life.
We can never obtain peace in the outer world until we make peace with ourselves.
For life in general, there is but one decree: youth is a blunder, manhood a struggle, old age a regret.
Dictators ride to and fro upon tigers which they dare not dismount. And the tigers are getting hungry.
If a man neglects education, he walks lame to the end of his life
Money is better than poverty, if only for financial reasons.
In order to seek truth, it is necessary once in the course of our life to doubt, as far as possible, of all things.
Anything I've done up till 27 May 1999 was kind of an illusion, existing without living. My daughter, the birth of my daughter, gave me life.
Nothing in life is more remarkable than the unnecessary anxiety which we endure, and generally create ourselves.
Each life makes its own immitation of immortality.
One of the saddest things in life, is the things one remembers.
People do not like to think. If one thinks, one must reach conclusions. Conclusions are not always pleasant.
A life spent making mistakes is not only more honorable, but more useful than a life spent doing nothing.
If people do not believe that mathematics is simple, it is only because they do not realize how complicated life is.
It's only terrible to have nothing to wait for.
Three things have been difficult to tame: the oceans, fools, and women. We may soon be able to tame the oceans; fools and women will take a little longer.