When three persons work together, each can be the teacher in some aspects
If one is guided by profit in one's actions, one will incur much ill will.
They must often change, who would be constant in happiness or wisdom.
To know what is the right thing to do and not do it is the greatest cowardice.
He is the truly courageous man who never desponds.
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.