In his classic work Ruach Chaim, Rav Chaim of Volozhin, preeminent student of the Vilna Gaon and founder of the yeshivah system as we know it today, gives us a profound and multifaceted commentary on Pirkei Avos, blending mystical insights, depth of thought, and fascinating chiddushim. This new English translation captures the spirit of the original while remaining accessible to the reader. Ruach Chaim gives readers an important new way to understand the ancient wisdom of our Sages, and offers scholar and layman alike a serious introduction to Rav Chaim's eternal wisdom.