From the time of Zeno to Simplicius, a period of about nine hundred years, the Stoic philosophy formed the characters of some of the best and greates… - George Long

The inability to listen and to attend is of course a mental defect; but habit may make the defect so great, that a man's ears may almost lose the faculty of hearing what another man says, and he may be able to hear only the sweet sound of his own voice. Such incapable people are generally great talkers, very tiresome, and bad companions. They cannot be debaters in public assemblies, and can only deliver themselves of their own words.

We cannot work without matter to work on, and we must look round and see what there is. There is a material which will never fail. It is perhaps eternal, at least for us. It costs nothing, and it is everywhere. Raise your eyes on a clear night and look at the magnificent spectacle of the starry heavens... Would it be asking too much to ask masters occasionally to direct their pupils to the observation of the most splendid sight which the sons of men have had before their eyes ever since they have trod the earth?—to point out the position and tell the names of some of the brightest of these wondrous objects; to show the apparent motion of these bodies, to point out the polar star, and to lead by slow and sure steps to the conclusion which the genius of man has drawn from this apparent motion, and other considerations.

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 division or subdivision is not formally adopted by Antoninus, for... there is no method in his book; but it is virtually contained in it.