人生中最美好的时刻，不是那些被动、接受、放松的时光……最美好的时刻通常发生在一个人自愿努力去完成一项艰难而有价值的事情时，身体或心灵被拉伸到极限的时候。
The best moments in our lives are not the passive, receptive, relaxing times… The best moments usually occur if a person’s body or mind is stretched to its limits in a voluntary effort to accomplish something difficult and worthwhile.
False happiness renders men stern and proud， and that happiness is never communicated. True happiness renders them kind and sensible， and that happiness is always shared.
Losing oneself in infinity is the highest freedom.
True courage is facing one's own weaknesses and striving to change.