人生最美的时刻尚未到来。
可持续发展不是一种选择，而是我们对后代的责任。
Life is what happens when you're busy making other plans.
The central task of education is to implant a will and facility for learning; it should produce not learned but learning people. The truly human society is a learning society, where grandparents, parents, and children are students together.