The history of a nation is, in essence, the history of its ruling class.
学校必须与生活紧密相连,教育与劳动相结合。
创造不是来自智力,而是来自源于内在需要的游戏本能。创造性头脑与它所钟爱的对象玩耍。
I'm the truth, don't ever doubt me.
No president who performs his duties faithfully and conscientiously can have any leisure.