Did Sun Tzu say “If you know the enemy and know yourself, you need not fear the result of a hundred battles”?

Did Sun Tzu say “If you know the enemy and know yourself, you need not fear the result of a hundred battles”?

Found word for word. Yes. The text appears in works attributed to Sun Tzu. Source and location below.

18. Hence the saying: If you know the enemy and know yourself, you need not fear the result of a hundred battles. If you know yourself but not the enemy, for every victory gained you will also suffer a defeat.
The Art of War — Sun Tzu, ¶287 · Public domain (US), Project Gutenberg #132 · source

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