Change is hardest at the beginning, messiest in the middle, and best at the end.
变革在开始时最难，在中间最混乱，在结束时最好。
The success of any political system depends on its ability to deliver both prosperity and justice.
We are not destroyed by what we hate， but by what we love.
Don’t fear failure—fear being in the same place next year as you are today.
The most exciting breakthroughs often come from interdisciplinary research.
这世界是个好地方，值得为它奋斗。
