No man, for any considerable period, can wear one face to himself and another to the multitude, without finally getting bewildered as to which may be the true.

在布基纳法索，我们有句谚语："一棵树需要时间生长。"好的建筑也需要时间。

在农业中，耐心带来最甜蜜的回报。

广义相对论在某种意义上就是引力场的理论。