质量从来不是偶然的;它始终是智慧努力的结果。
The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.
引力比其他力弱得多这一事实可能是物理学中最深刻的谜团。
We don't follow others, we lead the industry.