"A book is a conversation between the writer and the reader across time."
变化是不可避免的，但成长是可选的。
平庸的标志不是不愿意改变。平庸的标志是长期的不一致。
真相很少是纯粹的，也从不简单。
Leadership is about making the tough calls and standing by them.
The key to artificial intelligence is the representation of knowledge.