我对自己的外表非常有信心。
宏观经济政策的目标是创造一个稳定的环境，使个人能够制定长期计划。
The present state of the system of nature is evidently a resultant of what it was in the preceding moment, and if we conceive of an intelligence which at a given instant comprehends all the relations of the entities of this universe, it could state the respective positions, motions, and general effects of all these entities at any time in the past or future.
"The only way to discover the limits of the possible is to go beyond them into the impossible."