What does Mandela speak about the qualities of love and hatred in men? Why does he say that the oppressor is not free? From the lesson Nelson Mandela a long walk to freedom

Dear Student,
Nelson Mandela said that love is more natural to come in human hearts than hate. According to him, one should learn to hate in order to be taught to love others. 
He said that oppressors are not free because they are the prisoners of their own mind and are under control of hatred and prejudice. 

Hope this helps.

Regards