Authors:

If I tell you I'm good, probably you will say I'm boasting. But if I tell you I'm not good, you'll know I'm lying.

Bruce Lee (2015). “Bruce Lee Jeet Kune Do: Bruce Lee's Commentaries on the Martial Way”, p.33, Tuttle Publishing
If I tell you I'm good, probably you will say I'm boasting. But if I tell you I'm not good, you'll know I'm lying.