A person may cause evil to others not only by his actions but by his inaction， and in either case， he is justly accountable to them for the injury.

I try to make the invisible visible.

物理学家必须拥有生动的直觉想象力，因为新思想不是通过演绎产生的，而是通过艺术性的创造性想象。

伟大的事情从来不会来自舒适区。

实现明天的唯一限制是我们今天的疑虑。