Even among the earliest Stoics, Logic or Dialectic does not occupy the same place as in Plato: it is considered only as an instrument which is to be … - George Long

Some distinguished philosophers think that boys' eyes should be taught or trained to the examination of objects: in other words, that boys should be taught to observe things and to see likeness and difference. It is done to some extent by all boys: their games teach them something, and they know a cake from an apple. But the power of careful, patient looking at a thing is not fully acquired without some pains on the part of a teacher. When a boy reads aloud, he must look carefully at the words and letters, or he will blunder. This is an instance of observation. But the philosophers mean, I believe, that we should introduce certain things called sciences into school teaching.

By drawing an object the children will also learn a fundamental doctrine of philosophy; but I don't recommend letting them know what the doctrine is. They will discover it some time. We do not draw objects as they are: we draw them as they seem to be. To the eye things are what they seem to be, but they are in reality, if you know what that means, something else.

Epictetus and Antoninus have had readers ever since they were first printed. The little book of Antoninus has been the companion of some great men.