“Your enemies can kill you, but only your friends can hurt you.”
“Your Worst Enemy Could Be Your Best Friend && Your Best Friend Your Worst Enemy”
“You cannot be betrayed by your enemies, only your friends.”
“The only true immortality lies in one's children.[Letter to his friend, Richard Heuberger]”
“The best men tell you the truth because they think you can take it; the worst men either try to preserve you in some innocent state with their false protection, or are ‘brutally honest.’ When someone tells, lets you think for yourself, experience your own emotions, he is treating you as a true equal, a friend…And the best men cook for you.”