人工智能的真正挑战不仅仅是构建智能机器，而是构建能够学习和适应的机器。

"A journey is a person in itself; no two are alike. And all plans, safeguards, policing, and coercion are fruitless. We find after years of struggle that we do not take a trip; a trip takes us."

聪明的投资者是现实主义者，他们向乐观主义者出售，从悲观主义者那里购买。