Samyaksambuddhas (Pali:sammasambuddha) gain Nirvana by their own efforts, and discover theDhamma without having a teacher to point it out. They then lead others to enlightenment by teaching the Dhamma in a time or world where it has been forgotten or has not been taught before, because a Samyaksambuddha does not depend upon a tradition that stretches back to a previous Samyaksambuddha, but instead discovers the path anew.