孩子是最诚实的评论家；他们会直接告诉你他们的想法。
Children are the most honest critics; they will tell you exactly what they think.
I remember my friend Johnny von Neumann used to say, 'with four parameters I can fit an elephant, and with five I can make him wiggle his trunk.'
译文 ：真机、真味要含蓄一些，不要轻易点破。这样，其中的奥妙就会无穷无尽，难以用言语表达。所以圣人从不夸夸其谈。真机、真味一旦点破，说一年都说不完，就像往裂缝里浇水一样支离破碎，没有任何耐人寻味的地方了。
"We live in time—it holds us and moulds us—but I’ve never felt I understood it very well."
能源的未来在于传统能源与可再生能源的融合，而非对立。
America has no permanent friends or enemies, only interests.