The souls impurity consists in bad judgments, and purification consists in producing in it right judgments, and the pure soul is one which has right judgments. – Epictetus

One thing in the world, of value, is the active soul. – Ralph Waldo Emerson

We must no more ask whether the soul and body are one than ask whether the wax and the figure impressed on it are one. – Aristotle

Why do you hasten to remove anything which hurts your eye, while if something affects your soul you postpone the cure until next year? – Horace