“A stupid person can make only certain, limited types of errors; the mistakes open to a clever fellow are far broader.”

“Any man can make mistakes, but only an idiot persists in his error”

“Human beings learn from their errors and error during a process can have educational effect, but why the humans make the mistakes? Because the process of education is the one of learning from errors. It means that the ones make the mistakes and this gives them the power of motivational ability.”

“A mistake is only an error, it becomes a mistake when you fail to correct it”

“The aim of science is not to open the door to infinite wisdom, but to set some limit on infinite error.”

“A certain type of perfection can only be realized through a limitless accumulation of the imperfect.”

“To make no mistakes is not in the power of man; but from their errors and mistakes the wise and good learn wisdom for the future.”

“The only person who never makes mistakes is the person who never does anything.”

“Whoever estimates the sensible sameness by the verbal identity of their common name will commit the error of mistaking for physical what is only intellectual. …the sensible signification of language is strictly limited by the sensible knowledge of the hearer.”

“Many of my personal enemies picture me as a cold type - a person who acts according to a certain line, a calculating type.”