成为一名作家就是成为一名专业的观察者。
To be a writer is to be a professional observer.
数学的研究是所有智力和精神发展的不可或缺的基础。
It is sadder to find the past again and find it inadequate to the present than it is to have it elude you and remain forever a harmonious conception of memory.
行为由驱力和习惯强度的相互作用决定。
学习数学的唯一方法就是做数学。
成功的道路是采取大规模、坚定的行动。