Meditations, Book 4, Section 25

Marcus Aurelius — The Emperor

There is someone who practices philosophy without even owning a coat. There is someone who practices it without even owning a book. One person says, 'I am half naked and have no bread to eat, yet I don't abandon reason.' But I say this: I lack the food of good teaching and guidance, yet I don't abandon reason either.

Marcus Aurelius — The Emperor Original

There is, who without so much as a coat; and there is, who without so much as a book, doth put philosophy in practice. I am half naked, neither have I bread to eat, and yet I depart not from reason, saith one. But I say; I want the food of good teaching, and instructions, and yet I depart not from reason.