Related:

• The proof of a system's value is its existence.
• Let ignorance talk as it will, learning has its value.
  -- J. de La Fontaine (1621-1695) -- The Use of Knowledge, Book viii, Fable 19...
• Praise is like gold - its value is derived from its scarcity.
• The value of a program is proportional to the weight of its output.
• Matter will be damaged in direct proportion to its value.
• The value of a program is directly proportional to the weight of its output.
• The great end of education is to discipline rather than to furnish the mind
  o train it to the use of its own powers, rather than fill it with the accumulation of others....