Sorrow is not suited to seeing things accurately, to understanding how to get things done, to avoiding dangers, or to knowing what is just. So the wise man will not indulge in pity, because there cannot be pity without mental suffering. All else that those who feel pity are inclined do, he will do gladly and with an elevated spirit; he will bring relief to another’s tears, but will not add his own. To the shipwrecked man he will give a hand; he will give shelter to the exile, and charity to those in need.

Seneca, On Mercy, II