Sentence:  On the other hand, <WSD>Androcydes</WSD>, in his letter to Alexander the Great, says, (to correct his intemperate drinking of wine,) “My good lord, remember that when you take your wine, that you drink the very blood of the earth: hemlock, you know, Sir, is poison to man, even so is wine to hemlock." 
Meaning of the word marked with <WSD> tags:  A Greek physician and writer of the 4th century BCE, who according to Pliny advised Alexander the Great to moderate his drinking.