失去一个父母可能被视为不幸;失去两个则像是疏忽。
真正的暴力是我们因为害怕做真实的自己而对自己施加的暴力。
The study of the mind must be free from all preconceived notions.
The realization that electronic properties can be topologically protected has revolutionized our understanding of solid-state physics.