Nelson Mandela said this quote

Resentment is like drinking poison and then hoping it will kill your enemies.

~ Nelson Mandela

A Nation should not be judged by how it treats its highest citizens, but it's lowest ones

~ Nelson Mandela

Live life as though nobody is watching, and express yourself as though everyone is listening.

~ Nelson Mandela

I am fundamentally an optimist. Whether that comes from nature or nurture, I cannot say. Part of being optimistic is keeping one's head pointed toward the sun, one's feet moving forward. There were many dark moments when my faith in humanity was sorely tested, but I would not and could not give myself up to despair. That way lays defeat and death.

~ Nelson Mandela