The Oral Tradition remained unwritten in order to bring the disciple into constant person contact with the Sage, from whose words and deeds the disciple learned the Svara (thought) of the Torah. And the most effective form of personal contact is the Service of the Sages...
Those who served the Sages could see great lessons every day. However, the Service of the Sages has another great purpose, besides the acquiring of the Torah-system of thinking, and that is the lesson of the honor of the Torah. — Rejoice, O Youth