I like to be happy, I like to have fun. I like to be around people who are positive and happy.
Children have real understanding only of that which they invent themselves, and each time that we try to teach them something too quickly, we keep them from reinventing it themselves.
记忆不仅是个人的事情，也是集体的事情。
数学的语言是宇宙的语言，通过学习它，我们可以理解宇宙。
跨行业和政府的合作对于推动能源转型取得有意义的进展至关重要。
Mental activity is always directed toward some end.
