One of the great ambitions is to discover the diversity of the world, to discover who inhabits the world.

The institution of marriage, if you look at it over many centuries, has come and gone.

What we make of people, and what we see in the mirror when we look at ourselves, depends on what we know of the world, what we believe to be possible, what memories we have, and whether our loyalties are to the past, the present or the future.

When will we make the same breakthroughs in the way we treat each other as we have made in technology?

Never before have humans been so ambitious, have they thought that they could be much more than their parents were.

Conversation is a meeting of minds with different memories and habits. When minds meet, they don't just exchange facts: they transform them, reshape them, draw different implications from them, engage in new trains of thought. Conversation doesn't just reshuffle the cards: it creates new cards.

A dream is what makes people love life even when it is painful.