1. The degree of practice of a country's theory depends on the degree to which the theory meets the needs of this country-Marx 2. Science is a general and practice is a soldier. -At most? Que 3, theory divorced from practice is the greatest misfortune-Da? Finch 4. Young people must first set up their ambitions and be ambitious, and then they must aspire to become useful talents of the country and the people. Therefore, we should choose a goal to struggle and study and practice hard. -Wu 5. Human beings need people who are good at practice, and such people can get the greatest benefit from their work; ..... but human beings also need dreamers, who are too obsessed with the selfless development of a cause to pay attention to their own material interests. -Madame Curie 6. It is better to use labor practice than empty talk. Anonymous 7. Don't promise others easily when you are incompetent. Once you have promised others, you must keep your promise. Washington