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.
做产品要像小白用户一样思考。
Innovation is not just about creating something new; it's about making a difference in people's lives.
像明天就要死去一样活着，像永远活着一样学习。
自由民主可能构成“人类意识形态演化的终点”和“人类政府的最终形式”，因此构成了“历史的终结”。
Every seed we plant carries the potential to transform lives.