最终，我们记住的不是敌人的言语，而是朋友的沉默。
Some birds are not meant to be caged, their feathers are just too bright.
The healthy social life is found when in the mirror of each human soul the whole community finds its reflection, and when in the community the virtue of each one is living.
The history of mathematics is a testament to the ingenuity and creativity of the human mind.
The past beats inside me like a second heart.