As relevant in 1677 as it is today….

June 12, 2012

…there is no greater folly than to be very inquisitive and laborious to find out the causes of such a phenomenon as never had an existence, and therefore men ought to be cautious and to be fully assured of the truth of the effect before they venture to explicate the cause

The displaying of supposed witchcraft by John Webster, 1677.

Relevant to real scientists, and to those quacks and charlatans seeking a mechanism of action for medicines that do not yet have a proven effect.