Why feel sorrow

… the wise man will say just what a Marcus Cato would say, after reviewing his past life: “The whole race of man, both that which is and that which is to be, is condemned to die. Of all the cities that at any time have held sway over the world, and of all that have been the splendid ornaments of empires not their own, men shall some day ask where they were, and they shall be swept away by destructions of various kinds; some shall be ruined by wars, others shall be wasted away by inactivity and by the kind of peace which ends in sloth, or by that vice which is fraught with destruction even for mighty dynasties—luxury. All these fertile plains shall be buried out of sight by a sudden overflowing of the sea, or a slipping of the soil, as it settles to lower levels, shall draw them suddenly into a yawning chasm. Why then should I be angry or feel sorrow, if I precede the general destruction by a tiny interval of time?” Let great souls comply with God’s wishes, and suffer unhesitatingly whatever fate the law of the universe ordains; for the soul at death is either sent forth into a better life, destined to dwell with deity amid greater radiance and calm, or else, at least, without suffering any harm to itself, it will be mingled with nature again, and will return to the universe.

Seneca, Epistulae Morales ad Lucilium, LXXI. ON THE SUPREME GOOD