User needs are both the starting point and the end point of business.
Adaptation is the mind's greatest achievement.
我现在生活的全部信念在于，孤独远非一种罕见而奇特的现象，它不仅仅是我和少数其他孤独者的特质，而是人类存在的核心和不可避免的事实。
Psychology must be based on observable facts, not speculation.
每一本书都是一次旅程，每一次旅程都会改变你。