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.
It's not always necessary to be better than everyone else, but to be better than you used to be.
释义:能够忍耐最难忍受的困苦,最终必能苦尽甘来。
It's not about being the best, it's about being better than you were yesterday.