"Mostly the animals understand their roles, but man, by comparison, seems troubled by a message that, it is often said, he cannot quite remember, or has gotten wrong. Implied in this is our feeling that life demands an answer from us, that an essential part of man is his struggle to remember the meaning of the message with which he has been entrusted, that we are, in fact, message carriers. We are not what we seem. We have had a further instruction."
- Loren Eiseley
The Unexpected Universe