物体的加速度与所受的合外力成正比，与物体的质量成反比。加速度的方向与合力的方向相同。
The alternation of motion is ever proportional to the motive force impressed; and is made in the direction of the right line in which that force is impressed.
Education is the most powerful weapon which you can use to change the world.
我不害怕冒险，也不害怕失败。
The most effective way to promote democracy is not through military intervention but through the slow and steady process of building institutions and promoting economic development.
It’s not about being fearless, it’s about getting over that fear and getting on with it.
成功的路上没有捷径，只有不断努力。