计算机科学中真正的挑战不是编写程序，而是理解计算的本质。
The real challenge in computer science is not to write programs, but to understand the nature of computation.
The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.
"Imagination is the key to unlocking the world."
A society’s competitive advantage will come not from how well its schools teach the multiplication and periodic tables， but from how well they stimulate imagination and creativity.
Psychology is a science, and teaching is an art; and sciences never generate arts directly out of themselves.
I never looked at the consequences of missing a big shot... when you think about the consequences you always think of a negative result.
The beauty of chemistry lies in its ability to explain the world at the molecular level.