Climate change: Never before in history have human beings been called on to act collectively in defence of the Earth

I have struggled against tyranny. I didn't do that in order to substitute another.

To forgive is indeed the best form of self-interest since anger, resentment, and revenge are corrosive of that summum bonum, the greatest good.

One of the things we might want to learn when considering the failings of others is not to gloat because someone else has tripped up.

Israel will never get true security and safety through oppressing another people. A true peace can ultimately be built only on justice. We condemn the violence of suicide bombers, and we condemn the corruption of young minds taught hatred; but we also condemn the violence of military incursions in the occupied lands, and the inhumanity that won't let ambulances reach the injured.

Because forgiveness is like this: a room can be dank because you have closed the windows, you've closed the curtains. But the sun is shining outside, and the air is fresh outside. In order to get that fresh air, you have to get up and open the window and draw the curtains apart.

Love your enemy; it will ruin his reputation.