The big money is not in buying or selling, but in the waiting.

Most of what matters in our lives takes place in our absence.

机器学习的最终目标是让计算机从经验中学习，并随着时间的推移提高其性能。

The present state of the system of nature is evidently a consequence 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 most dangerous creation of any society is the man who has nothing to lose.