“All the vital mechanisms, varied as they are, have only one object, that of preserving constant the conditions of life in the internal environment.Claude Bernard
“Our ideas are only intellectual instruments which we use to break into phenomena; we must change them when they have served their purpose, as we change a blunt lancet that we have used long enough.Claude Bernard
“The doubter is a true man of science; he doubts only himself and his interpretations, but he believes in science.Claude Bernard
“The science of life… is a superb and dazzlingly lighted hall which may be reached only by passing through a long and ghastly kitchen.Claude Bernard
“Put off your imagination, as you put off your overcoat, when you enter the laboratory. Put it on again, as you put on your overcoat, when you leave.Claude Bernard