"Today will still yearn to know why we are here and where we came from. Humanity's deepest desire for knowledge is justification enough for our continuing quest. And our goal is nothing less than a complete description of the universe we live in."

"Who can know anybody?' said the bookshop owner. 'Every person is like thousands of books. New, reprinting, in stock, out of stock, fiction, non-fiction, poetry, rubbish. The lot. Different every day. One's lucky to be able to put his hand on the one that's wanted, let alone know it."