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!

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

Sometimes miracles occur only when you jump in.

Mankind is divided into two classes: those who, being artificial, praise nature, and those who, being natural, praise art.

Don't even think for a moment that you are not going to die.

Men and nature must work hand in hand. The throwing out of balance of the resources of nature throws out of balance also the lives of men.

He is praised by some, blamed by others.

And so this is Xmas for black and for white, for yellow and red, let's stop all the fight.

I think vegetarians - for a lot of them - it's about a lack of commitment to life and relationships. There are some who just like the fact that they're controlling something in their life.

As so often before, liberty has been wounded in the house of its friends.

There are no difficulties except for those who worry too much about tomorrow.

The solution may be for a lot of the world's problems is to turn around and take a forward step. You can't just keep trying to make a flawed system work.