The best and most beautiful things in the world cannot be seen or even touched - they must be felt with the heart.
世界上最美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。
The universe we observe has precisely the properties we should expect if there is, at bottom, no design, no purpose, no evil, no good, nothing but blind, pitiless indifference.
某人的一小步就是人类的一大步。
Science is a journey, not a destination.
在数学中，发现的旅程往往比目的地本身更有价值。