[T]he Buddha explains that all beings are capable of attaining Buddhahood, without exception. The Buddha-nature is the true nature of all beings. In Buddha-nature there are no barriers due to race, class, gender, ethnicity, religion, sexual orientation, or even moral quality. The One Vehicle teaches that all people are capable of attaining Buddhahood; all of the previous teachings of the Buddha, separated into several “vehicles,” are skillful methods leading people to the One Vehicle.