“It is reported that you philosophise indiscriminately and publicly, which is opposed to the customs of Pythagoras. With assiduity you did indeed learn them, O Hipparchus; but you have not preserved them. My dear fellow, you have tasted Sicilian tit-bits, which you should not have repeated. If you give them up, I shall be delighted; but if you do not, you will to me be dead. For it would be pious to recall the human and divine precepts of Pythagoras, and not to communicate the treasures of wisdom to those who have not purified their souls, even in a dream. It is unlawful to give away things obtained with labors so great, and with assiduity so diligent to the first person you meet, quite as much as to divulge the mysteries of the Eleusynian goddesses to the profane. Either thing would be unjust and impious. We should consider how long a time was needed to efface the stains that had insinuated themselves in our breasts, before we became worthy to receive the doctrines of Py-
thagoras. Unless the dyers previously purified the garments in which they wish the desired colors to
be fixed, the dye would either fade, or be washed away entirely.