人们不禁会感到这些数学公式拥有独立的存在和自己的智慧,它们比我们更聪明,甚至比它们的发现者更聪明。
水和空气,所有生命赖以生存的两种基本流体,已经变成了全球的垃圾箱。
The natural price of labor is that price which is necessary to enable the laborers, one with another, to subsist and to perpetuate their race, without either increase or diminution.