Nichiren Daishoinin states in "True Entity of Life," 

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Exert yourself in the two ways of practice and study. Without practice and

study, there can be no Buddhism. Both practice and study arise from faith.

                                                                            (Gosho, p. 668; MW-1, p. 95)

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     Practice and study originate in faith, and at the same time, exerting ourselves in practice and study is a natural consequence of believing. When these three arise in the life of the practitioner, the sense of joy becomes evident.

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