It was not so in Greece, where philosophers professed less, and undertook more. Parmenides pondered nebulously over the mystery of knowledge; but the pre-Socratics kept their eyes with fair consistency upon the firm earth, and sought to ferret out its secrets by observation and experience, rather than to create it by exuding dialectic; there were not many introverts among the Greeks. Picture Democritus, the Laughing Philosopher; would he not be perilous company for the desiccated scholastics who have made the disputes about the reality of the external world take the place of medieval discourses on the number of angles that could sit on the point of a pin? Picture Thales, who met the challenge that philosophers were numskulls by “cornering the market” and making a fortune in a year. Picture Anaxagoras, who did the work of Darwin for the Greeks and turned Pericles form a wire-pulling politician into a thinker […]