He who is really kind, can never be unhappy
Success depends upon previous preparation, and without such preparation there is sure to be failure.
It is only the very wisest and the very stupidest who never change.
There are three marks of a superior man: being virtuous, he is free from anxiety; being wise, he is free from perplexity; being brave, he is free from fear.
Be not ashamed of mistakes and thus make them crimes.
Look for an occupation that you like, and you will not need to labor for a single day in your life.