The study of nature is a perpetual joy.
对于那样的人来说,时间是过剩的,是他们看着慢慢流干的桶。但实际上,他认为,它是你手中捧着的一滩发光的泥水;你应该用所有的精力去保护它。
Technology is just a tool. In terms of getting the kids working together and motivating them, the teacher is most important.