Probable impossibilities are to be preferred to improbable possibilities.
Aristotle
Once you eliminate the impossible, whatever remains, no matter how improbable, must be the truth.
Arthur Conan Doyle
It is nearly always the most improbable things that really come to pass.
E. T. A. Hoffmann
There are improbable things suspended in space, like the earth.
Meryl Streep
Man can believe the impossible, but man can never believe the improbable.
Oscar Wilde