如果你不顽强，你就会过早放弃试验。如果你不灵活，你就会以头撞墙，而不会找到解决问题的不同办法。

The power of cryptography is not just in keeping secrets, but in enabling trust in a digital world.

The discovery of topological insulators has opened up a new frontier in condensed matter physics, where the interplay of symmetry and topology leads to novel quantum states of matter.

The truth is rarely pure and never simple.

The realities are that, you know, as a black man, Barack can get shot going to the gas station.

The architect must be a guardian of the future.

We need to internalize this idea of excellence. Not many folks spend a lot of time trying to be excellent.