According to the Mahāsaccakasutta,[note 33] from the fourth jhana the Buddha gained bodhi. Yet, it is not clear what he was awakened to.[page needed] "Liberating insight" is a later addition to this text, and reflects a later development and understanding in early Buddhism.[page needed][page needed] The mentioning of the four truths as constituting "liberating insight" introduces a logical problem, since the four truths depict a linear path of practice, the knowledge of which is in itself not depicted as being liberating.[note 34]