In the 1951 film, what does the Doorknob tell Alice about getting through the door?

In the 1951 film, the Doorknob tells Alice that she needs a key to get through the door.

Alice discovers a tiny door leading into Wonderland, but the key is on a glass table that she cannot reach after shrinking. The Doorknob explains that the door will not open without it, prompting Alice to drink from the bottle marked “Drink Me” and change size.

The scene establishes one of the film’s recurring ideas: Wonderland’s problems often have simple rules that become difficult because Alice’s size and surroundings keep changing. After growing too large from the cookie, she eventually shrinks again and uses the empty bottle to float through the keyhole.

A common mix-up is remembering that Alice needs to shrink as the answer. Shrinking is necessary to fit through the doorway, but the Doorknob’s practical instruction is that she must first obtain the key. The Doorknob was voiced by Joseph Kearns, while animator Frank Thomas helped bring the character to life.