Descriptive anatomy is to physiology what geography is to history, and just as it is not enough to know the typography of a country to understand its history, so also it is not enough to know the anatomy of organs to understand their functions.
Claude BernardWe must keep our freedom of mind, ... and must believe that in nature what is absurd, according to our theories, is not always impossible.
Claude BernardWith the aid of these active experimental sciences man becomes an inventor of phenomena, a real foreman of creation; and under this head we cannot set limits to the power that he may gain over nature through future progress of the experimental sciences.
Claude Bernard