The deepest problems in mathematics often arise from the simplest questions.
数学中最深刻的问题往往源于最简单的问题。
生命的终结是幸福，而幸福是宁静。
The fabric of society must depend on the individual rights of persons, on the rights of property.
心脏是一块有弹性的肌肉。
To photograph is to appropriate the thing photographed.
知识就是力量，但学习是超能力。