The Dhammapada (c. BC 300) quotes
"Do not speak harshly to any one; those who are spoken to will answer thee in the same way. Angry speech is painful: blows for blows will touch thee."
The man who insists upon seeing with perfect clearness before he decides, never decides. Accept life, and you must accept regret
Action is only coarsened thought-thought becomes concrete, obscure, and unconscious.
"Do not speak harshly to any one; those who are spoken to will answer thee in the same way. Angry speech is painful: blows for blows will touch thee."