Mark Twain Impossible Quotations

It is not worthwhile to try to keep history from repeating itself, for man's character will always make the preventing of the repetitions impossible

A healthy and wholesome cheerfulness is not necessarily impossible to any occupation.

Stripping away the irrational, the illogical, and the impossible, I am left with atheism. I can live with that.

They did not know it was impossible so they did it

Are you so unobservant as not to have found out that sanity and happiness are an impossible combination?