The Wisdom of Nagarjuna is written by Dr. Peter Della Santina. Nagarjuna is almost alone among the Buddhist saints who have elucidated the teachings of the Buddha Sakyamuni for the benefit of all beings. Nagarjuna altered the interpretation of the Enlightened One's philosophy, which was popular at the time, and gave it a vibrancy and dynamism that has continued to sustain it among Mahayana devotees to this day. The revolution that Nagarjuna brought about within Buddhism was not a major deviation from the Buddha Sakyamuni's original philosophy. Adherents of the Madhyamaka school, on the other hand, are unquestionably correct in stating that their interpretation expresses the actual import of the Buddha's doctrine and the essence of Buddhism.