1. It is not a bad thing or a shame for a person to take a detour and make a mistake on the road of scientific exploration. We should have the courage to admit and correct our mistakes in practice. -Einstein

2. A single person is weak, just like a wandering Robinson. Only when he is with others can he accomplish many things. -Schopenhauer

3. Experience can help us avoid detours and help us grow. We must first change ourselves and eliminate all bad factors before we can enjoy the fun of a better life brought by success. -(America) Ruth? rosie