Alice asked the Cheshire Cat who was sitting in a tree "What road do I take?"

The cat asked, "Where do you want to go?"

"I don't know " answered Alice.

"Then, said the cat, it really doesn't matter, does it?

And how do you know that you're mad? "To begin with," said the Cat, "a dog's not mad. You grant that?" I suppose so, said Alice. "Well then," the Cat went on, "you see a dog growls when it's angry, and wags it's tail when it's pleased. Now I growl when I'm pleased, and wag my tail when I'm angry. Therefore I'm mad.

Oh, you can't help that,' said the cat. 'We're all mad here.

Alice didn't think that proved it at all; however, she went on: 'And how do you know that you're mad?'
'To begin with,' said the Cat, 'a dog's not mad. You grant that?'
'I suppose so,' said Alice.
'Well then,' the Cat went on, 'you see, a dog growls when it's angry, and wags its tail when it's pleased. Now I growl when I'm pleased, and wag my tail when I'm angry. Therefore I'm mad.'
'I call it purring, not growling,' said Alice.

If you don't know where you want to go, then it doesn't matter which path you take.

It [the Cheshire Cat] vanished quite slowly, beginning with the end of the tail, and ending with the grin, which remained some time after the rest of it had gone.