Confucius said in "The Analects": "I have to examine myself three times every day: Have I been unfaithful in my plans for others? Have I not believed in my friends? Have I not been accustomed to teaching?" This sentence emphasizes self-reflection. importance.

Plato once said: "Self-control is the instinct of the strongest." This sentence emphasizes the importance of self-discipline. Only through self-control can self-improvement be achieved.

Hegel once said: "Self-reflection is the source of all intelligence." This sentence expresses the importance of self-reflection for personal growth and is the source of intelligence.

Aristotle once said: "What makes humans human is self-discipline." This sentence emphasizes that one of the characteristics that distinguishes humans from animals is self-discipline.