One should always prefer the probable impossible to the improbable possible.

Related:

• Aristotle's Dictum:
  One should always prefer the probable impossible to...
• Probable impossibilities are to be preferred to improbable
  possibilities...
• Reality is not always probable,
  or even likely...
• It's not impossible, just highly improbable. --
  The Hitch Hiker's Guide to the...
• The dictum that truth always triumphs over persecution is one of those pleasant falsehoods which men repeat after one another till they pass into commonplace,
  but which all experience refutes. -- John Stuart...
• It is possible that blondes also prefer
  gentlemen. Nah...
• When you have eliminated the impossible, whatever remains,
  however improbable, must be the truth. ...
• Man can believe the impossible, but can never believe the improbable.
  Oscar Wilde (1854...
• When you have eliminated the impossible, whatever remains,
  however improbable, must be the truth. -- Sherlock...