It is very much easier for a rich man to invest and grow richer than for the poor man to begin investing at all. And this is also true of nations.

Our physical unity has gone far ahead of our moral unity.

Fear can indeed be the beginning of wisdom.

On the one hand, we are faced with the stewardship of this beautiful, subtle, incredibly delicate, fragile planet. On the other, we confront the destiny of our fellow man, our brothers. How can we say that we are followers of Christ if this dual responsibility does not seem to us the essence and heart of our religion?

There is no human failure greater than to launch a profoundly important endeavour and then leave it half done. This is what the West has done with its colonial system. It shook all the societies in the world loose from their old moorings. But it seems indifferent whether or not they reach safe harbour in the end.

It is only when people begin to shake loose from their preconceptions, from the ideas that have dominated them, that we begin to receive a sense of opening, a sense of vision...That is the sort of time we live in now. We...live in an epoch in which the solid ground of our preconceived ideas shakes daily under our uncertain feet.

We cannot cheat on DNA. We cannot get round photosynthesis. We cannot say I am not going to give a damn about phytoplankton. All these tiny mechanisms provide the preconditions of our planetary life. To say we do not care is to say in the most literal sense that "we choose death."