To make anything a habit, do it; to not make it a habit, do not do it; to unmake a habit, do something else in place of it.

We should not moor a ship with one anchor, or our life with one hope.

We do not choose our own parts in life, and have nothing to do with those parts. Our duty is confined to playing them well.

No living being is held by anything so strongly as by its own needs. Whatever therefore appears a hindrance to these, be it brother, or father, or child, or mistress, or friend, is hated, abhorred, execrated.

Keep silence for the most part, and speak only when you must, and then briefly.

When men are unhappy, they do not imagine they can ever cease to be so; and when some calamity has fallen on them, they do not see how they can get rid of it. Nevertheless, both arrive; and the gods have ordered it so, in the end men seek it from the gods

If you have assumed a character above your strength, you have both acted in this matter in an unbecoming way, and you have neglected that which you might have fulfilled.