Letters 120.15

The greatest proof, as I maintain, my dear Lucilius, that the soul proceeds from loftier heights, is if it judges its present situation lowly and narrow, and is not afraid to depart. For he who remembers whence he has come knows whither he is to depart. Do we not see how many discomforts drive us wild, and how ill-assorted is our fellowship with the flesh?

Seneca, Letters to Lucilius 120.15, translated by Richard Mott Gummere