Related:

• Love is the wisdom of the fool and the folly of the wise.
• Love laughs at locksmiths.
• He who lives without folly is less wise than he believes.
• If A fool persists in his folly he shall become wise. -- William Blake
• The study of the errors into which great minds have fallen in the pursuit of truth can never be uninstructive.
  . . No man is so wise but that he may learn some wisdom from his past errors, either of thought or action, and no society has made such advances as to be capable of no improvement from the retrospect of its past folly and credulity....
• If a fool would persist in his folly he would become wise. -- William Blake
• Answer a fool according to his folly, lest he be wise in his own conceit. -- Proverbs, 26:5
• Where ignorance is bliss, 'tis folly to be wise. -- Gray