To eat bread without hope is still slowly to starve to death.
Complacency is the enemy of progress.
埃尔德什差异问题让我着迷,因为它陈述起来如此简单,但含义却如此深刻。
我们教育体系的一个明显的特征是对儿童人格的尊重、并达到前所未有的程度。