The expression often used by Mr. Herbert Spencer of the Survival of the Fittest is more accurate and is sometimes equally convenient.

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

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

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

Nothing exists for itself alone, but only in relation to other forms of life

Building a better mousetrap merely results in smarter mice.

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

An American monkey, after getting drunk on brandy, would never touch it again, and thus is much wiser than most men.

It is not the biggest, the brightest or the best that will survive, but those who adapt the quickest.

We can allow satellites, planets, suns, universe, nay whole systems of universes, to be governed by laws, but the smallest insect, we wish to be created at once by special act.

What a book a devil's chaplain might write on the clumsy, wasteful, blundering, low, and horribly cruel work of nature!

Whatever is worthy of adventure, can only be experienced.

Never mistake legibility for communication.

A book without conversation, is like a life without friends, you know it's going to end, but you want it to be soon.

I don't expect the press to say thank you for the efforts that I make.

Who will not judge him worthy to be robbed That sets his doors wide open to a thief, And shows the felon where his treasure lies?

I did not fall into love - I rose into love.

Football is about making mistakes. Who makes the most, loses the game.

Once we admit that the public sector takes an immense amount of risk along the entire innovation chain, it becomes crucial to find ways to share both risks and rewards.

The first time I smoked was at home with my mother and stepfather; they were like, If you are going to do this, we'd rather you did this with us.

Every man is free to push the mountains, but mountains won't move with these pushes.