For systems, the analogue of a face-lift is to add to the control graph an edge that creates a cycle, not just an additional node.
Leadership is not about giving orders; it's about inspiring others to achieve greatness.
Language is a skin: I rub my language against the other. It is as if I had words instead of fingers, or fingers at the tips of my words.
宁可在田野中狩猎以求健康，也不花钱让医生开令人作呕的药。
I'm not perfect, but I'm perfectly me.
The joy of mathematics is in the discovery of patterns and the understanding of their implications.
Every book is a journey, and every journey changes you a little.
The truth is, we know so little about life, we don't really know what the good news is and what the bad news is.
The source of every crime, is some defect of the understanding; or some error in reasoning; or some sudden force of the passions.
