Life can only be understood backwards; but it must be lived forwards.
Life is what happens to you while you're busy making other plans.
Not all things are to be discovered; many are better concealed.
In order to seek truth, it is necessary once in the course of our life to doubt, as far as possible, of all things.
To cherish what remains of the Earth and to foster its renewal is our only legitimate hope of survival.
Life is pure adventure, and the sooner we realize that, the quicker we will be able to treat life as art.
Life shrinks or expands in proportion to one's courage.
Remember that not getting what you want is sometimes a wonderful stroke of luck.
The earth is like a spaceship that didn't come with an operating manual.
Each life makes its own immitation of immortality.
I am convinced we do not only love ourselves in others but hate ourselves in others too.
History is a set of lies agreed upon.
We cannot live better than in seeking to become better.
I restore myself when I'm alone.
Doubt must be no more than vigilance, otherwise it can become dangerous.
Of all the diversions of life, there is none so proper to fill up its empty spaces as the reading of useful and entertaining authors.
No social problem is as universal as the oppression of the child
We all owe death a life.
Exceptional claims demand exceptional evidence.
Some days you're the bug, some days you're the windshield.
Some people are desperately looking for scapegoats, they just don't want to see the truth!