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。