People are not born to know, who can not be confused (people are not born to know everything, who can not understand)

Since there are black spots on the sun, "everything in the world" is even more impossible without defects. Chernyshevski

Because of their shortcomings, people are willing to tolerate their success. It also often makes potential opponents ignore their competition and challenges.

Never try to cover up your knowledge defects, even the boldest guesses and assumptions, which are unacceptable. No matter how bright the color of this soap bubble is, it is bound to burst, so you will only get shame. (Pavlov) "A Letter to Young People"