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Don't give up easily, because you never know what will happen in the next second.
心理学家必须避免一切形而上的假设。
At the end of the day, if I can say I had fun, it was a good day.
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.