Letters 113.8

If Justice, Bravery, and the other virtues have actual life, do they cease to be living things and then begin life over again, or are they always living things?

But the virtues cannot cease to be. Therefore, there are many, nay countless, living things, sojourning in this one soul.

Seneca, Letters to Lucilius 113.8, translated by Richard Mott Gummere