The best fertilizer? A farmer's footsteps in the field.
最好的肥料？是农民田间的足迹。
预测未来的最好方式就是创造未来。
A method of solution is perfect if we can foresee from the start, and even prove, that following that method we shall attain our aim.
The only way to discover the limits of the possible is to go beyond them into the impossible.
It does not matter how slowly you go as long as you do not stop.
民主城邦的基础是自由权。