He pretty muched nailed it, didn't he? LOL
He was accurate though, as Jesus did the same thing when he condensed the 613 commandments into two with "Love G-d with all your heart, mind, and soul--and Love your neighbor as yourself."
I mentioned the Hillel quote, because he lived shortly before Jesus and the school he founded was still flourishing, so Jesus would likely have been familiar with Hillel and his teachings. There is a similar Talmudic passage from shortly after the time of Jesus (around the year 100), in which Rabbi Akiba and Rabbi Tarphon debated which single verse in the Bible was the most important; Akiba argued for Leviticus 19:18 ("love your neighbor as yourself"), and Tarphon for Genesis 5:1 ("God created man in the image of God").