Ingersoll's story of the man that went down from heaven on a reduced-rate excursion ticket good for 30 days --- and tried to sell his return ticket.

AI的未来在于如何让它更好地服务于人类，而不是取代人类。

She was my most special friend. My only friend.

数学不是关于数字、方程、计算或算法的：它是关于理解的。

深度学习的关键是在你的神经网络中有很多层。