grave quotations

« Le cœur a ses raisons que la raison ne connaît point » 
"The heart has its reasons which reason does not know"
—Pensées, Blaise Pascal

«l'amor che move il sole e l'altre stelle»  
"The love that moves the sun and the other stars"  
—(Paradiso, XXXIII, v. 145), last verse of  Divine Comedy, Dante Alighieri

« On ne voit bien qu'avec le cœur.  L'essentiel est invisible pour les yeux. »
"One sees clearly only with the heart. What is essential is invisible to the eye."
—"Le petit prince", Antoine de Saint Exupéry

Some people  have words they so loved, they want them on their gravestone. Often, it is a Bible verse; but there are thoughts of writers expressed in philosophical or poetic words.

"In the depth of winter, I finally learned that there was in me an invincible summer"

 —Return to Tipasa (1952), Albert Camus

 There is a bench by Wade Pond with the same words. [click]

and some are humourous:
"If we knew what we were doing it wouldn't be called research"