Liberty means responsibility. That is why most men dread it.
韧性是通过逆境建立的;不要害怕挑战,要从中学到东西。
在量子场论中,真空并非空无一物,而是充满了虚粒子。
I am not afraid of death, I just don't want to be there when it happens.
I believe in the power of kindness and compassion.