死亡是唯一真正严肃的哲学问题。
Death is the only truly serious philosophical problem.
量子力学的统计诠释是唯一不会导致矛盾的诠释。
In a state, the liberty of one citizen is a menace to the liberty of another.
人们不会使用手持计算器来学习计算,但是却会忘记算术。