Ki Tetze contains more commandments than any other Torah portion. Some commandments studding the text cause us to crinkle our brow. Rather than general ethical maxims, they are ethical baby steps -- commandments that seem to be trying to toddle away from Hammurabi's Code of Laws and more severe systems.
In Ki Tetze, we are given many mitzvot to do -- 613, actually. What's a mitzvah? A commandment to do a good deed, or to follow directions to perform a certain ritual. As a Jew, it is important to do both. We become role models for the world in our acts of charity, and we remember who we are and where we came from through our ritual.