A successful career has been full of blunders.
Bad temper is its own scourge. Few things are more bitter than to feel bitter. A man's venom poisons himself more than his victim.
You will never 'find' time for anything. If you want time, you must make it.
You have not fulfilled every duty unless you have fulfilled that of being pleasant.
Proverbs are potted wisdom.
In life, as in chess, forethought wins.