The gem cannot be polished without friction nor man without trials.
I do not want a friend who smiles when I smile, who weeps when I weep; for my shadow in the pool can do better than that.
Heaven begat Virtue in me; what can man do unto me?
Without Goodness one cannot enjoy enduring happiness
An image is better than one thousand words
I know how the birds fly, how the fishes swim, how animals run. But there is the Dragon. I cannot tell how it mounts on the winds through the clouds and flies through heaven. Today I have seen the Dragon.