True friendship is a plant that grows slowly.

——[U.S.] Washington

Life is a long journey. Only by constantly meeting new friends can the journey not be lonely.

——"Learn to Communicate"

The most beautiful thing in the world is to have a few serious friends with upright minds and hearts.

——[American] Einstein

If you have an apple and I have an apple, and we exchange each other, we still only have one apple; if you have a thought, I have an idea, and we exchange it with each other, and each of us has two ideas.

——[Beauty] Bernard Shaw