a man should be independent/steadfast at the age of thirty

This is the Analects of Confucius? Confucius' self-evaluation of his life when he was in politics at the age of 30. I have five tenths, but I am determined to learn. Standing at 30, not confused at 40, knowing destiny at 50, obedient at 60, and free at 70. I don't break the rules. " Although not everyone can be a saint of Confucius, later generations often regard these self-evaluations of Confucius as the ideal state of life that should be achieved at different stages of life.

There are many explanations for the comment of "standing at the age of 30". The more accepted statement is that "a 30-year-old person should rely on his own skills, be able to bear his own responsibilities independently, and have determined his own life goals and development direction". In short, at the age of 30, he should be able to face all difficulties calmly.