John Locke
If children let themselves do whatever they want without working, they will not study literature, music, sports or manners to ensure the highest moral level.
Democritus
Children's games often contain profound thoughts.
Schiller
White hair is nothing more than that I am old! Youth is no longer like you in Zhihu? If you are not a boy and learn to be famous, will you be a husband?
These are the only ones.