The French physiologist Pierre Cabanis, who lived from 1757 to 1808, was a man ahead of his times. Consider his words, quoted below, in terms of their application to the values of mental stimulation and continuing education:
"Impressions arriving at the brain make it enter into activity, just as food falling into the stomach excites it to more abundant secretion of gastric juice."
– Pierre Jean George Cabanis, translated from French
