Did Paul Accept the Teachings of Jesus?

Many people do not realize just how infrequently Paul mentions the sayings of Jesus himself. And scholars can't agree why he doesn't quote Jesus more. Did Paul not know what Jesus taught? How could he not know? Did he think it wasn't important? Wasn't relevant? Was misleading? Moreover, if we compare what Jesus taught with what Paul taught -- are we even dealing with the same religion. These are some of most important issues confronting a historical understanding of the New Testament and early Christianity.