That a Jew is someone who identifies with the history, culture, and future of the Jewish people.
That Judaism is the creation of the Jewish people, and that it has evolved over time.
That we can be good Jews without believing in a supernatural being, and that in celebrating the Jewish holidays, our words should reflect our beliefs.
That ethical behavior, like knowledge of the word, should be derived from the use of reason, not from tradition and custom, and that it should be determined by the effect of our actions on others, not by the supposed dictates of a deity.
That courage, perseverance, curiosity, and skepticism are more valuable in living a productive and meaningful life than piety and faith.