Swami Rama: If you hate.. 

The Buddhist scriptures say that if you hate others, nothing happens to the hated person, something happens to you, to your mind, to your heart. You can learn to love somebody, even one whom you hate, by understanding that he is a human being like you. Who am I to hate that person? Stop hurting and hating others, for it injures you. If you constantly injure yourself, it can lead you to an action that can never be forgiven by your own mind, by your own conscience. You are constantly killing your conscience. Stop doing that.

– Swami Rama