No known human group... simply throw out its dead without any ritual or ceremony. In stark contrast, no animal practices burial of dead individuals of its own species.

Nothing in biology makes sense except in the light of evolution.

The more we know, the better we realize that our knowledge is a little island in the midst of an ocean of ignorance.

Does the evolutionary doctrine clash with religious faith? It does not. It is a blunder to mistake the Holy Scriptures for elementary textbooks of astronomy, geology, biology, and anthropology.

Natural selection must be replaced by eugenical artificial selection. This idea constitutes the sound core of eugenics, the applied science of human betterment.

The living world is not a single array... connected by unbroken series of intergrades.

No evidence is powerful enough to force acceptance of a conclusion that is emotionally distasteful.

Nature's stern discipline enjoins mutual help at least as often as warfare. The fittest may also be the gentlest.

Scientists often have a naive faith that if only they could discover enough facts about a problem, these facts would somehow arrange themselves in a compelling and true solution.

Pat answers to complex problems are the hallmark of intellectual mediocrity

An accident, a random change, in any delicate mechanism can hardly be expected to improve it. Poking a stick into the machinery of one's watch or one's radio set will seldom make it work better.

I've seen enough family photos in enough homes to know that the term 'suitable for framing' should have a stricter definition.

The ideal is the enemy of the real.

The body is a big sagacity, a plurality with one sense, a war and a peace, a flock and a shepherd.

Who knew that listening to a guy sleep could be so much deeper than sleeping with a guy.

Our judgements about things vary according to the time left us to live -that we think is left us to live.

I shall strive not to be guilty of adding any fuel to the flames of hatred and passion which, if continued to be fed, promise to burn up whatever is left by the war of decent human feeling in Europe.

Dad's are the treasures of the world!

I really was kind of like a musical nerd. I would watch VH1's 'Behind The Music.' That was heavy when I was a kid. I would sit up and want to watch that all day instead of going outside sometimes.

When I quit all these things and said I didn't have any time, I meant I didn't have any time.

The penalty of greatness is to write autographs.