The 2 most common elements in the universe are hydrogen and stupidity. Send this quote to a friend 1 The only difference between a rut and a grave is the depth. Send this quote to a friend 2 Reality is the only obstacle to happiness. Send this quote to a friend 3 Mediocrity thrives on standardization. Send this quote to a friend 4 Let not the sands of time get in your lunch. Send this quote to a friend 5