成功的衡量标准不仅仅是利润，还包括积极的影响。

在儿童时期没有养成思想的习惯。将使他从此以后一生都没有思想的能力。

化学的美妙之处在于它无处不在——你只需要去发现它。

可持续性不是一种趋势，而是我们对后代的责任。

The state, therefore, has not existed from all eternity. There have been societies that did without it, that had no notion of the state or state power. At a certain stage of economic development, which was necessarily bound up with the split of society into classes, the state became a necessity.