You can't live your life for other people. You've got to do what's right for you, even if it hurts some people you love.

No one has ever become poor by giving.

Life can only be understood backwards; but it must be lived forwards.

Luxury is not a necessity to me, but beautiful and good things are.

A photograph is a moral decision taken in one eighth of a second.

You can find the entire cosmos lurking in its least remarkable objects.

I think it's much more interesting to live not knowing than to have answers which might be wrong.

As far as we can discern, the sole purpose of human existence is to kindle a light of meaning in the darkness of mere being.

The more man meditates upon good thoughts, the better will be his world and the world at large.

In order to seek truth, it is necessary once in the course of our life to doubt, as far as possible, of all things.

If we couldn't laugh we would all go insane.

Each life makes its own immitation of immortality.

Life is a journey, not a destination.

Science is the outcome of being prepared to live without certainty and therefore a mark of maturity. It embraces doubt and loose ends.

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.

Losing your way on a journey is unfortunate. But, losing your reason for the journey is a fate more cruel.

Without a measureless and perpetual uncertainty, the drama of human life would be destroyed.

Nothing exists except atoms and empty space; everything else is opinion.

If people do not believe that mathematics is simple, it is only because they do not realize how complicated life is.

Consistency is contrary to nature, contrary to life. The only completely consistent people are the dead.

Life should be great rather than long.