Related:

• Praise, like gold and diamonds, owes its value only to its scarcity. -- Samuel Butle
• Truth, like gold, is to be obtained not by its growth, but by washing away from it all that is not gold.
  -- Leo Tolstoy...
• In a democracy dissent is an act of faith. Like medicine, the test of its value is not in its taste, but in its effects.
  -- J. W. Fulbrigh...
• The value of money has an objective regulator only when it is linked to a real commodity, like gold, itself requiring the cost of human labor to be produced.
  By comparison, the value of inconvertible paper money has no objective regulator, its marginal cost of production being nearly zero....
• The value of knowledge lies not in its accumulation, but in its utilization.
• The proof of a system's value is its existence.
• The value of a program is proportional to the weight of its output.
• Matter will be damaged in direct proportion to its value.