the hundred and thirtieth olympiad, when Zeno was an old man. The letter of Antigonus to Zeno was as follows, and it is reported by Apollonius, the Syrian, in his essay on Zeno.
KING ANTIGONUS TO ZENO THE PHILOSOPHER, GREETING.
“I think that in good fortune and glory I have the advantage of you; but in reason and education I am inferior to you, and also in that perfect happiness which you have attained to. On which account I have thought it good to address you, and invite you to come to me, being convinced that you will not refuse what is asked of you. Endeavour, therefore, by all means to come to me, considering this fact, that you will not be the instructor of me alone, but of all the Macedonians together. For he who instructs the ruler of the Macedonians, and who leads him in the path of virtue, evidently marshals all his subjects on the road to happiness. For as the ruler is, so is it natural that his