A person can only know his ability by using his ability in practice.

7、每个人都是哲学家，但多数人并未付诸实践。

Everyone is a philosopher, but most people have not put it into practice.

8、自古圣贤之言学也，咸以躬行实践为先，识见言论次之。

Since ancient times, sages'theory of speech has also been based on practice, followed by knowledge of speech.

9、理论有误差，实践有误差，理论与实践相结合，误差就会减小。

There are errors in theory and practice. When theory is combined with practice, the errors will be reduced.

10、今天在实践中证明的东西，就是过去在想象中存在的东西。

What is proved in practice today is what existed in imagination in the past.

11、对于道德的实践来说，最好的观众就是人们自己的良心。

For moral practice, the best audience is people's own conscience.

12、通过实践而发现真理，又通过实践而证实真理和发展真理。

Truth is discovered through practice, and truth is proved and developed through practice.

13、我相信，经过这样的训练，到死时我会很平静，因为我早已实践过无数次了。

I believe that after such training, I will be very calm when I die, because I have practiced it countless times.

14、我们改革开放的成功，不是靠本本，而是靠实践，靠实事求是。

The success of our reform and opening-up depends not on the origin, but on practice and seeking truth from facts.

15、实践是知识的母亲，知识是生活的明灯。

Practice is the mother of knowledge and knowledge is the light of life.

16、理论在变为实践，理论由实践赋予活力，由实践来修正，由实践来检验。

Theory is changing into practice, theory is endowed with vitality by practice, revised by practice and tested by practice.

17、大道理，每个人都懂都知道，只是很难在生活中实践而已。

Everyone knows the general principle, but it is difficult to practice it in life.

18、梦想不是挂在嘴边的空气，而是需要认真的实践。

Dream is not the air that hangs on the lips, but the need for serious practice.