Medicine to produce health must examine disease; and music, to create harmony must investigate discord.

A quote about the criteria of testing beforehand to achieve good results.

plutarch

Like it on Facebook, Tweet it or share this question on other bookmarking websites.

781 Those who aim at great deeds must also suffer greatly.
763 All men whilst they are awake are in one common world: but each of them, when he is asleep, is in a world of his own.
779 Perseverance is more prevailing than violence; and many things which cannot be overcome when they are together, yield themselves up when taken little by little.
855 Nothing is harder to direct than a man in prosperity; nothing more easily managed that one is adversity.
760 Courage stands halfway between cowardice and rashness, one of which is a lack, the other an excess of courage.

Loading suggestions...