数学的本质在于它的自由。
The essence of mathematics lies in its freedom.
最好的图画书能为不同年龄段的读者提供不同层次的阅读体验。
【译文】 孔子说:“譬如堆山,还差一筐,没堆成就停了,功亏一篑是自己造成的;譬如填坑,只倒一筐,继续填下去,坚持不懈是自己决定的。”
人的幼儿时期,足以决定一辈子的生活形态。
In the context of computational learning, the concept of 'probably approximately correct' (PAC) learning provides a framework for understanding the efficiency and feasibility of learning algorithms.
当人是兽时,他比兽还坏。
We shall be everything to each other. Nothing else shall be of any consequence.