定理是数学的永久文献。
Theorems are the permanent literature of mathematics.
翻译：不同的人从不同的角度看待同一事物，会有不同的见解。
The discovery of exoplanets has opened a new window on the universe, allowing us to explore worlds beyond our solar system.
The body is always present, even in its absence.
Memory is what we thought we’d forgotten; it’s also what we thought we’d remember.