The Epistles of Apollonius of Tyana

AS for myself I am on friendly terms with philosophers; with sophists however or low clerks or any such other kind of wretches, I am neither on friendly terms now, and Heaven forbid I should ever be so at any later time. Although this does not apply to you, unless indeed you chance to be one of them, the following words do very much apply to you: heal and remedy your passions, and try to be a philosopher, and not to be jealous of those who really are such, for in your case old age is already at hand and death.