“In business, three things are necessary: knowledge, temper, and time.”

“Real wisdom is not the knowledge of everything, but the knowledge of which things in life are necessary, which are less necessary, and which are completely unnecessary to know. Among the most necessary knowledge is the knowledge of how to live well, that is, how to produce the least possible evil and the greatest goodness in one’s life. At present, people study useless sciences, but forget to study this, the most important knowledge.”

“Man wants three things; life, knowledge, and love.”

“the old maxim... "there are three things necessary to success in life--Impudence! Impudence! Impudence!”

“Regret for the things we did can be tempered by time; it is regret for the things we did not do that is inconsolable.”

“Regret for things we have done can be tempered by time, it is regret for things we have not done that is inconsolable.”