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.
数学之美在于它能够连接看似无关的思想。
任何白痴都能面对危机；磨损人的是日复一日的生活。
The forest doesn't need us, but we need the forest—this truth should guide every decision we make in forestry.
You affect the world by what you browse.
The past is not for living in; it is a well of conclusions from which we draw in order to act.