“[Man] progresses in all things by resolutely making a fool of himself.”
“A man learns to skate by staggering about and making a fool of himself. Indeed he progresses in all things by resolutely making a fool of himself.”
“A wise man can't seriously make himself anything, only a fool makes himself anything.”
“The reasonable man adapts himself to the world: the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.”
“A fool flatters himself, a wise man flatters the fool.”
“The cleverest of all, in my opinion, is the man who calls himself a fool at least once a month.”