“Don't simply knock and wait for the door to be opened. Go look for the keys. Some fit the lock better than others.”

“When I knocked, the door opened. When I looked, I found.”

“Simple as it seems, it was a great discovery that the key of knowledge could turn both ways, that it could open, as well as lock, the door of power to the many.”

“When you try to generate ideas, think of yourself as a sales person knocking on a whole subdivision of doors. Some won't open at all, some will open a suspicious crack, and some will slam in your face. But the more doors you knock on, the greater your chances of being invited in.”

“On one’s life’s journey to obtain destiny they will encounter hundreds of closed doors; some are locked and there is no key. There are only two choices.”

“In oneself lies the whole world and if you know how to look and learn, the door is there and the key is in your hand. Nobody on earth can give you either the key or the door to open, except yourself.”

“They are so busy knocking that they do not notice that the door is open!”

“The doors will be opened to those who are bold enough to knock.”

“I’m not totally mad at you. I’m just sad. You’re all locked up in that little world of yours, and when I try knocking on the door, you just sort of look up for a second and go right back inside.”

“Books are keys that open many doors.”