No hay peor ciego que el que no quiere ver.
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.
追随你的心,但别忘了带上你的大脑。
永远保持好奇心,突破往往就在那里发生。
The advancement of mathematics is through generalization.