The Rambam in Shoresh 9 of Sefer HaMitzvos says that there are four categories of mitzvos:
דע שכל צוויי התורה ואזהרותיה הנה הם בארבעה דברים. בדעות ובפעולות ובמדות ובדבור
- Deos (Beliefs, Attitudes, Thoughts)
- Peulos (Actions)
- Middos (Character traits)
- Dibbur (Speech)
In the sefer itself, the Rambam doesn't categorize his list of 613 mitzvos by these categories. I was wondering if anyone ever did? Sometimes it's not obvious how to categorize them (for example, ואהבת לרעך כמוך, loving one's neighbor like onself, is deos, middos, and consists of peulos).