数学的研究是所有智力和精神进步不可或缺的基础。
"I wanted to write a book that was funny, but also made people think."
生活是一系列的时刻，有些好，有些坏，但都很重要。
Most of what matters in our lives takes place in our absence.
通往可持续性的道路充满了挑战和机遇。