Albert Einstein had just been voted “man of the 20th century”.
He was travelling by train from Princeton and he could not find his ticket. The conductor said, “It’s all right. We know who you are. Sit back and relax.” Einstein nodded appreciatively.
The conductor moved on to the next carriage and as he looked back, he saw the great physicist on his knees looking underneath his seat for the missing ticket.
So he returned and said, “Look we know who you are and there’s no problem. You don’t need to buy another ticket.”
“Young man, I know who I am but I don’t know where I am going!”