What wretched doings come from the ardor of fame; the love of truth alone would never make one man attack another bitterly.

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!

If you do not write the thoughts of the moments, it is lost forever.

Blood doesn't make a family.

Natural selection is not gene centrist and nor is biology all about genes; our comprehending minds are a result of our fast evolving culture.

I like my drawings to be direct. I don't generally work on them for too long, but that doesn't mean that they are not works in their own right.

I don't consider genre while writing.

The vision that God gives is not some unattainable castle in the sky, but a vision of what God wants you to be down here.

I've lived enough of my life story to know this- Fate writes the book, but you make the movie.

There are no take-backs—just as in life. You must think before you move.

I spilt paint all over the bar, they almost fired me.

the more one advances, the more one sees the goal is still far off. And now I am simply resigned to see myself always imperfect and in this I find my joy.