...cause you think they are wise, or inspiring, or arty, or whatever.
Let's start with a pair of them:
"The cure for anything is salt water — sweat, tears, or the salt sea." Karen Blixen
"Love and desire are the spirit's wings to great deeds." Goethe
The bustard is a fortunate fowl,
for he has no reason to growl.
He is saved from what would be,
by the presence of a fortunate vowel.
(Isaac Asimov's favorite limeric)