抑制和引导本能冲动,使其可用于更高的文化活动,是文明的基本力量。
The greatest happiness of life is the conviction that we are loved; loved for ourselves, or rather, loved in spite of ourselves.
自守表示的研究是数学知识统一性的反映。
The best investment is in the tools of one’s own trade.
传记作者的任务是阐明,而不是评判。
I take nothing for granted. I now have only good days or great days.