“The stability of the internal medium is a primary condition for the freedom and independence of certain living bodies in relation to the environment surrounding them.”

True science teaches us to doubt and, in ignorance, to refrain.

Those who do not know the torment of the unknown cannot have the joy of discovery.

The doubter is a true man of science: he doubts only himself and his interpretations, but he believes in science.

Obervation is a passive science, experimentation is an active science.

The investigator should have a robust faith – and yet not believe.

The fact that knowledge endlessly recedes as the investigator is about to grasp it is what constitutes at the same time his torment and happiness.

If I had to define life in a single phrase, I should clearly express my thought of throwing into relief one characteristic which, in my opinion, sharply differentiates biological science. I should say: life is creation.

First causes are outside the realm of science.

The great experimental principle, then, is doubt, that philosophic doubt which leaves to the mind its freedom and initiative, and from which the virtues most valuable to investigators in physiology and medicine are derived.

A great discovery is a fact whose appearance in science gives rise to shining ideas, whose light dispels many obscurities and shows us new paths.

A discovery is generally an unforeseen relation not included in theory.

Well-observed facts, though brought to light by passing theories, will never die; they are the material on which alone the house of science will at last be built.

Particular facts are never scientific; only generalization can establish science.

Men who believe too firmly in their theories, do not believe enough in the theories of others. So these despisers of their fellows make experiments only to destroy a theory, instead of to seek the truth.

The true worth of an experimenter consists in his pursuing not only what he seeks in his experiment, but also what he did not seek.

The mental never influences the physical. It is always the physical that modifies the mental, and when we think that the mind is diseased, it is always an illusion.

An artist’s job is to inspire, from the Latin inspirare: to breathe into. The primary function of art is to inspire new thought shaped by emotions using the creative mediums we master – be it painting, music, design, craft, or photography.

You’re reducing a medium that’s meant to be seen on your 65-inch plasma screen at home for your 4-inch monitor on the train.

I have a burning desire to entertain and different mediums allow me to do this in different ways.

In language that is permissible in good society, and give it as early if not earlier, than it can be learned through any other reliable medium;

Music is the medium for expressing emotion. Music kindles love and infuses hope. It has countless voices and instruments. Music is in the hearts of all men and women.

Money is the medium of exchange, and it’s how you make things happen. To say you hate it is some farfetched, idealistic crap.

The body is our general medium for having a world.

We know not the matter of the things for which we should pray, neither the object to whom we pray, nor the medium by or through whom we pray; none of these things know we, but by the help and assistance of the Spirit.