Life did not intend to make us perfect. Whoever is perfect belongs in a museum.
To cherish what remains of the Earth and to foster its renewal is our only legitimate hope of survival.
Science is the outcome of being prepared to live without certainty and therefore a mark of maturity. It embraces doubt and loose ends.
Don't let making a living prevent you from making a life.
If you want to keep your memories, you first have to live them.
Those who want to live, let them fight, and those who do not want to fight in this world of eternal struggle do not deserve to live.
No one has ever become poor by giving.
Even when you think you have your life all mapped out, things happen that shape your destiny in ways you might never have imagined.
Losing your way on a journey is unfortunate. But, losing your reason for the journey is a fate more cruel.
And the day came when the risk to remain tight in a bud was more painful than the risk it took to blossom.
Don't part with your illusions. When they are gone you may still exist, but you have ceased to live.
Too much of a good thing can be wonderful!
Is it progress if a cannibal uses a fork?
One man with a gun can control 100 without one.
Freedom would be not to choose between black and white but to abjure such prescribed choices.
Life is pure adventure, and the sooner we realize that, the quicker we will be able to treat life as art.
The historian looks backward. In the end he also believes backward.
Live as if you were living a second time, and as though you had acted wrongly the first time.
If one's different, one's bound to be lonely.
The earth is like a spaceship that didn't come with an operating manual.
Doubt must be no more than vigilance, otherwise it can become dangerous.