若是有足够的空间，婴儿会爬行去抓取东西。
我不会把任何事情视为理所当然。
The business of education is not to make the young perfect in any one of the sciences, but so to open and dispose their minds as may make them capable of any, when they shall apply themselves to it.
可持续性不是一种选择；它是我们对后代的责任。