The most important factor in survival is neither intelligence nor strength but adaptability.

I am not apt to follow blindly the lead of other men

Some call it evolution, And others call it God.

It is always advisable to perceive our ignorance.

Man, wonderful man, must collapse, into nature's cauldron, he is no deity, he is no exception.

A mathematician is a blind man in a dark room looking for a black cat that isn't there.

Ignorance more frequently begets confidence than does knowledge.

The more one thinks the more one feels the hopeless immensity of man's ignorance.

A man who dares to waste one hour has not discovered the value of life.

Building a better mousetrap merely results in smarter mice.

The world will not be inherited by the strongest, it will be inherited by those ablest to change.

The love for all living creatures is the noblest attribute of man.

What we know of other people's only our memory of the moments during which we knew them.

Between the conception and the creation, between the emotion and the response, Falls the shadow.

We had the experience, but we missed the meaning.

The end of all our exploring will be to arrive where we started.

If you will not have God (and He is a jealous God), you should pay your respects to Hitler or Stalin.

Most of the evil in this world is done by people with good intentions.

The darkness declares the glory of light.