Abstract
Claude Bernard ? A learned physician and physiologist ? A diabetes specialist ? The inventor of the internal environment ? The creator of experimental medicine ?
Claude Bernard is all of these and more. He is one of the founders of modern medicine, stating that " medical science is based on physiology ", an outstanding teacher who saw his role as " to initiate the scientific movements of the moment ", a visionary of regulatory physiology, proclaiming that " The fixity of the internal environment is the condition of free and independent life ". We owe a debt of gratitude to this scientist, whose thinking continues to influence medical research and practice, sometimes without fully realizing it.
