In our reasonings concerning matter of fact， there are all imaginable degrees of assurance， from the highest certainty to the lowest species of moral evidence.

艺术家必须是精神的战士。

The moment you stop trying is the moment you start failing.

现代生物学运动的最终目标实际上是用物理和化学来解释所有生物学。

The quality of an organization's innovation determines the quality of its growth.

徒步旅行的真正魅力不在于看到物体，而在于它们激发的情感。