The Erdős discrepancy problem fascinated me because it was so simple to state yet so deep in its implications.
埃尔德什差异问题让我着迷，因为它陈述起来如此简单，但含义却如此深刻。
深度学习的关键是在你的神经网络中有很多层。
One who never turned his back but marched breast forward, never doubted clouds would break.
你必须愿意去那些让你害怕的地方。