Related:

• In order to make [a person] covet a thing, it is only necessary to make the thing difficult to attain.
  -- Samuel Cleme...
• Absence of evidence is evidence of absence of proof.
• The fact that man knows right from wrong proves his intellectual superiority to other creature
  but the fact that he can do wrong proves his moral inferiority to any creature that cannot....
• I don't know of a single foreign product that enters this country untaxed, except the answer to prayer.
  -- Mark Twain (Samuel Clemens) (1835-1910)...
• The history of the race, and each individual's experience, are thick with evidence that a truth is not hard to kill and that a lie told well is immortal.
  -- Mark Twain (Samuel Clemens) (1835-1910) -- Advice to Youth (published 1923)...
• There is no conclusive evidence of life after death.
  But there is no evidence of any sort against it. Soon enough you will know....
• proof by accumulated evidence: Long and diligent search has not revealed a counterexample.
  proof by cosmology: The negation of the proposition is unimaginable or meaningless....
• Apparently there is nothing that cannot happen today. -- Mark Twain (Samuel Clemens) (1835-1910)
• Honesty is the best policy--when there is money in it. -- Mark Twain (Samuel Clemens) (1835-1910)