If he is to gather experience he can hardly help making mistakes. For they are often the heavy cost of inexperience. But he can certainly help repeating those mistakes. And this depends first on how ready he is within his own heart to admit them as such; second on how ready he is to search for weaknesses of character or capacity which may lie behind them.
-- Notebooks Category 2: Overview of Practices Involved > Chapter 1: Ant's Long Path > # 97