If you can't explain it simply, you don't understand it well enough.
Don't let your brain interfere with your heart.
The human mind has first to construct forms, independently, before we can find them in things.
If one studies too zealously, one easily loses his pants.
My sailing system set sail, make it fast, no thoughts of energy or velocity, loll back, let boat drift.
Only in mathematics and physics was I, through self-study, far beyond the school curriculum, and also with regard to philosophy as it was taught in the school curriculum.