I don't think it's a good idea to do a formal memorization of something that's not based on any kind of scientific research.
Ehh, I've gotten a lot of value out of memorizing poems, and even definitions. I don't do many of the latter, but I've found that throwing a word in Anki usually causes me to have it available as a concept later, which is often helpful.
In an effort to internalise the Twelve Virtues of Rationality, I created an Anki deck. It's already been done, so the reason I'm posting is to share a condensed version of the article (created as a side effect of my making the deck).
Hopefully it will make it easier to quickly refresh the concepts if you've already read the article.
If you're not using spaced repetition, you should. Don't believe me? Try reading Gwern's thorough review of the topic.
Then download the “Twelve Virtues of Rationality” deck.
The first virtue is curiosity.
The second virtue is relinquishment.
The third virtue is lightness.
The fourth virtue is evenness.
The fifth virtue is argument.
The sixth virtue is empiricism.
The seventh virtue is simplicity.
The eighth virtue is humility.
The ninth virtue is perfectionism.
The tenth virtue is precision.
The eleventh virtue is scholarship.
Before these eleven virtues is a virtue which is nameless.