Authors:

A man's wisdom is his best friend; folly, his worst enemy.

Sir William Temple, Jonathan Swift, Lady Martha Giffard (1731). “Some account of the life and writings of Sir William Temple, written by a particular friend [his sister Lady Giffard] Observations upon the United Provinces of the Netherlands. Miscellanea. Memoirs, the third part, from the peace concluded 1679, to the time of the author's retirement from publick business. Memoirs of what past in Christendom from the war begun 1672, to the peace concluded 1679”, p.305
A man's wisdom is his best friend; folly, his worst enemy.