我扮演的每一个角色都是我的一部分，我在每一个角色中都留下了一部分自己。
Every role I take on is a piece of me, and I leave a piece of me in every role.
成长的唯一途径就是挑战自己。
The only way to learn mathematics is to do mathematics.
The division of labor is limited by the extent of the market.
The best way to predict the future is to invent it.
Never underestimate the power of a simple idea executed exceptionally well.
【释义】社会常把内向病理化，凯根用实验证明：内向气质是大脑独特的生物设定，藏着深度思考与独立创新的宝藏。