Letters 65.16

And not even now am I, as you think, wasting my time. For all these questions, provided that they be not chopped up and torn apart into such unprofitable refinements, elevate and lighten the soul, which is weighted down by a heavy burden and desires to be freed and to return to the elements of which it was once a part. For this body of ours is a weight upon the soul and its penance; as the load presses down the soul is crushed and is in bondage, unless philosophy has come to its assistance and has bid it take fresh courage by contemplating the universe, and has turned it from things earthly to things divine. There it has its liberty, there it can roam abroad; meantime it escapes the custody in which it is bound, and renews its life in heaven.

Seneca, Letters to Lucilius 65.16, translated by Richard Mott Gummere