1. It is a wise move to use the refined oil of "Politeness" on the mechanical device of "Friendship". ——Collett

2. Winning friendship depends on wisdom, and maintaining friendship depends on virtue. Both are equally important. ——W. Painter

3. When talking with friends, you need to be careful with your language. Adults should also take care of each other step by step and avoid spreading bad words, so as to promote the friendship between the two parties. Reducing right and wrong is an important part of promoting interpersonal relationships. Spread more good words and never spread a single bad word. ——Sanmao

4. Tell your close friends the pain, and the pain will be reduced by half; share the happiness with your friends, and the happiness will be divided into two. The effect of friendship is so magical!── Bacon

5. Don’t rely on gifts to gain a friend. You must offer your sincere love and learn how to win a person's heart in the right way. ── Socrates