My books have sold largely in England, have been translated into many languages, and passed through several editions in foreign countries. I have heard it said that the success of a work abroad is the best test of its enduring value. I doubt whether this is at all trustworthy; but judged by this standard my name ought to last for a few years.

Charles Darwin's Works: The life and letters of Charles Darwin... ed. by his son, Francis Darwin. 2v (ed. 1896)