Seneca,
Moral letters to Lucilius — Letter 101…
“ But how foolish it is to set out one's life, when one is not even owner of the morrow! O what madness it is to plot out far-reaching hopes! To say: "I will buy and build, loan and call in money, win titles of honour, and then, old and full of years, I will surrender myself to a life of ease." 5. Believe me when I say that everything is doubtful, even for those who are prosperous. No one has any right to draw for himself upon the future. The very thing that we grasp slips through our hands, and chance cuts into the actual hour which we are crowding so full. ”
