证明的严谨性将数学与所有其他科学区分开来。
Rigor in proof is what separates mathematics from all other sciences.
The writer must be a traitor to his class, his country, his religion—to everything except his conscience.
当保持现状的痛苦大于改变的痛苦时，改变就会发生。
跨行业的合作是解决我们面临的复杂能源挑战的关键。
A non-moral use of a term does not necessarily tell us what the term means.
丙型肝炎的挑战不仅在于找到病毒，还在于理解它是如何逃避免疫系统的。