It is also said: “If honourable conduct results from precepts, then precepts are amply sufficient for the happy life; but the first of these statements is true; therefore the second is true also.” We shall reply to these words that honourable conduct is, to be sure, brought about by precepts, but not by precepts alone.
Book: Moral Letters Vol III
Subtitle: Seneca's timeless letters of advice and wisdom.
Author: Seneca
Chapter: On the usefulness of basic principles
Location: Chapter 95, Section 6
Content:
6.
It is also said: “If honourable conduct results from precepts, then precepts are amply sufficient for the happy life; but the first of these statements is true; therefore the second is true also.” We shall reply to these words that honourable conduct is, to be sure, brought about by precepts, but not by precepts alone.