I agree with Agassiz that dogs possess something very like conscience.

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!

It's not bad to cough. But cover your mouth when coughing. It's not bad to complain. But cover your mouth when complaining, else you'll spread infections of complains on us!

We all have an inner intuition for authenticity, for matched up internal and external truth. When we detect this, we feel immediate comfort. We know truth when we hear it.

They should rule who are able to rule best.

The first step towards vice is to shroud innocent actions in mystery, and whoever likes to conceal something sooner or later has reason to conceal it.

The greater the responsibility, the greater the reward.

It is the crime not the scaffold which is the disgrace.

A community is infinitely more brutalised by the habitual employment of punishment than it is by the occasional occurence of crime.

Don't grieve for what doesn't come. Some things that don't happen keep disasters from happening.

I believe that the officers, and, especially, the directors, of corporations should be held personally responsible when any corporation breaks the law.

Focus alone is not enough; putting in the time to commit is also crucial to achieve success.