Related:

• The only measure of a man's usefulness is the extent to which he exercises his talent, according to the laws of his own growth, for the common good.
  -- Stanley Kunitz...
• The measure of man is what he does with power. -- Pittacu
• If there be any truer measure of a man than by what he does, it must be by what he gives.
  -- Robert South...
• Man has a single basic choice: to think or not, and that is the gauge of his virtue.
  Moral perfection is an unbreached rationality -- not the degree of your intelligence, but the full and relentless use of your mind, not the extent of your knowledge, but the acceptance of reason as an absolute....
• Whoever hunts deer without the forester Only loses his way in the forest.
  The superior man understands the signs of the time And prefers to desist....
• But man, proud man, Drest in a little brief authority
  Most ignorant of what he 's most assured, His glassy essence, like an angry ape, Plays such fantastic tricks before high heaven As make the angels weep....
• If a man is happy in his work, exerting himself to the full extent of his capabilities, and enjoying it, I'd say he's a success.
  -- William Romai...
• Water over Lake: the image of Limitation. Thus the superior man Creates numbers and measure, And examines the nature of virtue and correct conduct.
• only to the extent which -- in chains, in dungeo
  in hidden corners, in the cells of philosophers, in the shops of traders -- some men continued to think, only to that extent was humanity able to survive ....