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.
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。
Property is surely a right of mankind as real as liberty.
The most ordinary materials can become extraordinary through attention.
一生的特权就是做你自己。
To be a writer is to be a person who is always trying to find the truth.
The more constraints you have, the more creative you become.