Buddhist Morning Thought #16, Inner Potential

Neither the pure land nor hell exists outside oneself; both lie only within one's own heart. Awakened to this, one is called a Buddha: deluded about it, one is called an ordinary person. The Lotus Sutra reveals this truth, and one who embraces the Lotus Sutra will realize that hell is itself the Land of Tranquil Light. 

 (WND-1, 456)

Buddhist Morning Thought #40, Enlightenment

 This teaching was not propagated in the Former or Middle Day of the Law because the other sutras had not yet lost their power of benefit. ...