I know that I am destined to die; why, then, should I create attachments for myself in this world? In a world where all things are changing and passing, where I myself will soon become non-existent, of what use to me are attachments? Emile, my son, if I lose you, what will be left for me? I must nonetheless prepare myself for such an intolerable eventuality, because no one can assure me that I will die before you.
So if you wish to live happily and rationally, attach your heart only to beauties that are imperishable; try to limit your desires and hold duty in higher esteem than all else. Seek only those things that do not violate the law of morality, and accustom yourself to losing things without distress. Accept nothing, unless your conscience permits you. If you do all of this, you will surely be happy, and not become overattached to anything on earth. Rousseau [in a letter to his son] (via rzvzee)