怎么用英语描写对友谊及真正好朋友的理解？

A friend knows the song in your heart and can sing it back to you when you have forgotten the words.
朋友是知道你心灵深处的歌曲并且在你忘记歌词的时候唱给你听的人。
True friendship is see through the heart but not through the eyes.
真正的友谊是通过心灵而不是通过眼睛看到的。
Friendship is one mind in two bodies.
友谊是两个人一条心。