"The greatest of all lessons is to know oneself; for when a man knows himself, he knows God"
About this Quote
The intent is partly apologetic. Clement is addressing educated converts who suspect Christianity is intellectually thin compared to Platonism or Stoicism. By presenting self-knowledge as the gateway to knowing God, he frames Christian life as a rigorous ascent: you examine the soul, confront your disordered desires, and discover, beneath the noise of appetite and status, the divine image that Christianity claims is stamped on every person. The subtext is political in the spiritual sense: authority shifts from external spectacle and inherited ritual to the interior life, where conscience becomes a battleground.
There is also a quiet check on pride. "When a man knows himself" includes knowing limits, mortality, and dependence. That humility is what makes the second clause work. Clement’s God is not reached by trivia about oneself but by stripping away illusion until the self is seen in relation to its source. The line is persuasive because it flatters the intellect while demanding surrender: you can think your way toward God, but only if you let that thinking unmake your ego.
Quote Details
| Topic | God |
|---|---|
| Source | Help us find the source |
| Cite |
Citation Formats
APA Style (7th ed.)
Alexandra, Clement of. (2026, January 15). The greatest of all lessons is to know oneself; for when a man knows himself, he knows God. FixQuotes. https://fixquotes.com/quotes/the-greatest-of-all-lessons-is-to-know-oneself-172417/
Chicago Style
Alexandra, Clement of. "The greatest of all lessons is to know oneself; for when a man knows himself, he knows God." FixQuotes. January 15, 2026. https://fixquotes.com/quotes/the-greatest-of-all-lessons-is-to-know-oneself-172417/.
MLA Style (9th ed.)
"The greatest of all lessons is to know oneself; for when a man knows himself, he knows God." FixQuotes, 15 Jan. 2026, https://fixquotes.com/quotes/the-greatest-of-all-lessons-is-to-know-oneself-172417/. Accessed 12 Feb. 2026.










