If you wanted to you could look at your wallet.dat in a hex editor to see its contents. In theory you could memorize, but it is mostly impractical. You could print it off and have a small book.
Please look at the date - it's posted more then 1 year ago. See https://en.bitcoin.it/wiki/Brainwallet
Am I not allowed to post in old threads? (or is it discouraged?) I thought the topic was interesting, bringing your wallet.dat out of the digital world.
For some reading about bringing the wallet.dat out of the digital world, I suggest you take a look at this article : http://bitcoinmagazine.net/brain-wallets-the-what-and-the-how/
No need to hex edit your wallet.dat as it contains a lot more stuff then your privatekeys.
I really like the idea of using base 1751 to memorize something really complex. I've never given much thought to anything above hexadecimal.
