Virtue consists, not in abstaining from vice, but in not desiring it.
Man is so much the voice of his interest that it is not enough to make him see the right, but you must make him feel it.
One of my primary objects is to form the tools so the tools themselves shall fashion the work and give to every part its just proportion.
在量子力学中,观察者与被观察的系统并不是分离的。
As in geometry the most natural way of beginning is from a mathematical point, so is the same method in observations and natural history the most genuine, simple, and instructive.