你所需要的只是爱。
大多数人错失机会,因为它穿着工作服,看起来像工作。
要养活世界,我们必须首先了解脚下的土壤。
实现明天的唯一限制将是我们今天的疑虑。
We teach a subject not to produce little living libraries on that subject, but rather to get a student to think mathematically for himself.