The richer we have become materially, the poorer we have become morally and spiritually.

The real problem is that through our scientific genius we've made of the world a neighborhood, but through our moral and spiritual genius we've failed to make of it a brotherhood.

If our history can challenge the next wave of musicians to keep moving and changing, to keep spiritually hungry and horny, that's what it's all about.

Unless you have found God in your own soul, the whole world will seem meaningless to you.

I don't think I've ever been an agnostic. I've always thought there's a superior power, that this is not the real world and that there's a world to come.

Our scientific power has outrun our spiritual power. We have guided missiles and misguided man.