"He who can find no room for others lacks fellow feeling, and to him who lacks fellow feeling, all men are strangers."
"The sage has no interest of his own, but regards the interests of the people as his own. He is kind to the kind; he is also kind to the unkind: for virtue is kind. He is faithful to the faithful; he is also faithful to the unfaithful: for Virtue is faithful."
Tao Te Ching, Chapter 49 (~500 BC)
"To those who are good to me, I am good; and to those who are not good to me, I am also good. And thus all get to be good. To those who are sincere with me, I am sincere; and to those who are not sincere with me, I am also sincere. And thus all get to be sincere."