The natural and moral world is the two-fold object of man's rational care.
自然界和道德世界是人类理性关注的双重对象。
农民是最早的环保主义者——他们比任何人都更了解土地。
数学是关于概念之间关系的科学,与这些概念的内容无关。
If you don't fail at least 90 percent of the time, you're not aiming high enough.