· Remember: There is only one time that matters, and that’s now! It is important because it is our time to make a difference.

· The hour you put away without using it most effectively can never come back.

· You must have goals in life, goals for a lifetime, goals for a period of time, goals for a stage, goals for a year, goals for a month, goals for a week, goals for a day, goals for an hour , a one-minute goal.

· For a person who is immersed in mental work, if he does not move his limbs regularly, it will be extremely painful.

·Heroism consists in sacrificing oneself for belief and truth.

· The cause of science is to serve the people.

· Life is not a luxury, but a very heavy task.

·Ideal books are the key to wisdom.

·A mind without wisdom is like a lantern without candles.

· People are too accustomed to using force to maintain order, so it is impossible to think about social organization without repression.

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Pure, complete sorrow is as impossible as pure, complete joy.

·Civilization is not built on machines but on ideas.

· What is needed for successful teaching is not coercion, but stimulating students' desire.

· If a teacher only has love for his career, then he is a good teacher. If he integrates his love for education and his love for students, he is a perfect teacher.

·Ideal books are the key to wisdom.

· What matters is not the quantity of knowledge, but the quality of knowledge. Some people know a lot, but they don’t know the most useful things.

·We not only live on this land today, but also lived in the past and will always live there, in the whole.

It’s really hard to find stones! ! !