George Long

According to the subdivision of Cleanthes, Physic and Theology go together, or the study of the nature of Things, and the study of the nature of the Deity, so far as man can understand the Deity, and of his government of the universe. This …

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 used for the other divisions of Philosophy.

Cleanthes, a Stoic, subdivided the three divisions, and made six: Dialectic and Rhetoric, comprised in Logic; Ethic and Politic; Physic and Theology. This division was merely for practical use, for all Philosophy is one.

The Stoics made three divisions of philosophy, Physic, Ethic, and Logic. ...It appears, however, that this division was made before Zeno's time and acknowledged by Plato. ...Logic is not synonymous with our term Logic in the narrower sense …

Epictetus addressed himself to his hearers in a continuous discourse and in a familiar and simple manner. Antoninus wrote down his reflections for his own use only, in short unconnected paragraphs, which are often obscure.

The doctrines of Epictetus and Antoninus are the same, and Epictetus is the best authority for the explanation of the philosophical language of Antoninus and the exposition of his opinions.

In the wretched times from the death of Augustus to the murder of Domitian, there was nothing but the Stoic philosophy which could console and support the followers of the old religion under imperial tyranny and amidst universal corruption.