If we did not have a sense of who we were, how we got here, why we want to achieve something - which, on the face of it, on the logic of it, is probably not worth trying - and prove that logic wrong, then you wouldn't succeed; then you would just evaporate.

If the lecture is good, then everything is too smooth. That's the same in music: if the performance is too good, you really don't enjoy it, because it just goes by, and you can never penetrate into the heart of it. Sometimes a poor performance is better for enjoyment, because you can look at those things that were wrong and analyze them.

Even as wisdom often comes from the mouths of babes, so does it often come from the mouths of old people. The golden rule is to test everything in the light of reason and experience, no matter from where it comes.

The three hardest tasks in the world are neither physical feats nor intellectual achievements, but moral acts: to return love for hate, to include the excluded, and to say, 'I was wrong'.

We must embrace pain and burn it as fuel for our journey. She who loves roses must be patient and not cry out when she is pierced by thorns.

Don't waste time trying to put in what was left out. Try to draw out what was left in.