In a state, the liberty of one citizen is a menace to the liberty of another.
The value of life lies not in the length of days,but in the use we make of them.
宇宙的扭曲面——黑洞、虫洞、奇点等——对我如此吸引,因为它与日常生活中的平坦欧几里得几何如此不同。