As we know, there are known knowns; there are things we know we know. We also know there are known unknowns; that is to say we know there are some things we do not know. But there are also unknown unknowns – the ones we don't know we don't know.

#641

Guy de Maupassant • Henry David Thoreau • Albert Einstein • Voltaire • Friedrich Nietzsche • Confucius • Mike Monteiro • Zig Ziglar • Kurt D. Cobain • Elwyn Brooks White • Anna Eleanor Roosevelt • anonymous • Miguel de Cervantes Saavedra • Martin Luther King Jr. • Marshall McLuhan • Theodor Seuss Geisel • Steven Wright • John Maeda • Winston Churchill • Rabindranath Tagore • David Bohm • Annie Proulx • Mahatma Gandhi • Pablo Picasso

search