Truthfulness

In the same way I saw an ancient path, an ancient road, traveled by the Rightly Self-awakened Ones of former times. And what is that ancient path, that ancient road, traveled by the Rightly Self-awakened Ones of former times? Just this noble eightfold path: right view, right aspiration, right speech, right action, right livelihood, right effort, right mindfulness, right concentration...I followedthat path. Following it, I came to direct knowledge of aging & death, direct knowledge of the origination of aging & death, direct knowledge of the cessation of aging & death, direct knowledge of the path leading to the cessation of aging & death...Knowing that directly, I have revealed it to monks, nuns, male lay followers & female lay followers...
—Nagara Sutta

‎^ Thanissaro Bhikkhu. "Nagara Sutta". Access to Insight. Retrieved 2008-05-06.

 What happens when we substitute the word "truthful" as the word "right" then we get: Truthful View; Truthful Aspiration; Truthful Speech; Truthful Action; Truthful Livelihood; Truthful Effort; Truthful Mindfulness and Truthful Concentration.

 There is also the fact that there are two truths in the world as well. The truth of one's perception of event and the truth of the event in the world.