For history, I say again, has this and this only for its own: if a man will start upon it, he must sacrifice to no God but Truth; he must neglect all else; his sole rule and unerring guide is this - to think not of those who are listening to him now, but of the yet unborn who shall seek his converse.
The subject matter is autobiographical, it's all to do with hope and memory and sensuality and involvement, really.
I was still more concerned (a preference which you may be far from resenting) to strike a blow for Epicurus, that great man whose holiness and divinity of nature were not shams, who alone had and imparted true insight into the good, and who brought deliverance to all that consorted with him.