世界上最好和最美丽的东西是看不见甚至摸不着的——它们必须用心去感受。
"Verification is not just about finding bugs; it's about understanding why the system works the way it does."
"To love is to risk not being loved in return. To hope is to risk pain. To try is to risk failure, but risk must be taken because the greatest hazard in life is to risk nothing."
A mathematician is a maker of patterns, like a painter or a poet.