“The form follows the function.”

It is not always the magnitude of the differences observed between species that must determine specific distinctions, but the constant preservation of those differences in reproduction.

It is not enough to discover and prove a useful truth previously unknown, but that it is necessary also to be able to propagate it and get it recognized.

All knowledge that is not the real product of observation, or of consequences deduced from observation, is entirely groundless and illusory.

Habits form a second nature.

What nature does in the course of long periods we do every day when we suddenly change the environment in which some species of living plant is situated.

All known living bodies are sharply divided into two special kingdoms, based upon the essential differences which distinguish animals from plants, and in spite of what has been said, I am convinced that these two kingdoms do not really merge into one another at any point.

It is not the organs-that is, the character and form of the animal’s bodily parts-that have given rise to its habits and particular structures. It is the habits and manner of life and the conditions in which its ancestors lived that have in the course of time fashioned its bodily form, its organs and qualities.

Art comes out of art; it begins with imitation, often in the form of parody, and it’s in the process of imitating the voice of others that one comes to learn the sound of one’s own.

To play Trivial Pursuit with a life like mine could be said to be a form of homeopathy.

What I’ve learned about teaching is to refer back to the root of that word, which is educo, which means “to pull from.

I would box them into a corner with a badly formed question, and they didn’t know how to get out of it. Now, I let them take me through it step by step, and I listen.

There cannot be any communication except through form. If there is no form, you cannot create emotion in the spectator.

Each man is contained and constrained, on entering social life, to fit his own life in, just as he fits his words and thoughts into a language that was formed without and before him and which is impervious to his power.

Since then [1958 Coup in Iraq], reality started to take another form in my mind. Hence, I was aware of deception of our senses.

I’d like to think our love does return to us reincarnated in different human forms. That people might be temporary, but love is permanent and it just changes form.