When Muhammad Ali was the current reigning world heavy-weight champion boxer and at the height of his fame, he was on an airplane that was preparing to take off. The flight attendant came by and reminded him to fasten his seat belt. Ali said, “Superman don’t need a seat belt.” To which the quick-thinking flight attendant replied, “Superman don’t need an airplane, either.” Ali buckled his seat belt. Ali, you may remember, was famous for obnoxiously boasting, perhaps to intimidate his opponents, “I am the Greatest, I am the Greatest” (Charles Swindoll, Shedding Light on our Dark Side. Insight for Living, 1993, 85).