If a person wants to practice the spiritual contemplation according to the Lotus Sūtra, he should decide the content of practice after establishing the clear answer to the issues on the provisional and true teachings, and on the essential and theoretical sections. Since the Lotus Sūtra is the sole scripture worthy of being called ‘Wonderful,’ the way of the spiritual contemplation should be established according to this sūtra.
Risshō Kanjō, A Treatise on Establishing the Right Way of Meditation