"Wrinkles should merely indicate where smiles have been" — Mark Twain

Every thing possible to be believed is an image of truth

Source: The Marriage of Heaven and Hell (1790-1793)

Every saint has a past and every sinner has a future

Source: A Woman of No Importance (1893)

A thing of beauty is a joy forever; its loveliness increases; it will never pass into nothingness

Source: Endymion (1818)

Happiness in marriage is entirely a matter of chance

Source: Pride and Prejudice (1813)

All our discontents about what we want appeared to me to spring from the want of thankfulness for what we have.

Source: The Life and Adventures of Robinson Crusoe

My heart leaps up when I behold A Rainbow in the sky:

Source: Poems in Two Volumes, My Heart Leaps Up (1807)

Mark Twain Quote