In doing we learn.实践长才干.
Art is long,but life is short.人生有限,学问无穷.
Rome was not built in a way.罗马不是一天建成的/伟业非一日之功.
Example is better than precept.身教胜于言传.
Something unexpected may happen any time.天有不测风云.
Do not count your chickens before they are hatched.鸡蛋还未孵,先别数鸡雏;莫过早乐观.