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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.
在我们推理关于事实的过程中,有各种可能的确证程度,从最高的确定性到最低级别的道德证据。
无限的概念不仅仅是一个数学抽象,而是一个物理现实。
We should not only pursue technological leadership but also the practicality and popularity of technology.
目标不是哀悼失去的未来,而是将它们用作未来斗争的资源。
The best time to plant a tree was 20 years ago. The second best time is now.