Truth+Formula

 A Truth Formul a     (Courage+ Wisdom+ Understanding)³ × Right Judgement - Bias - (Lies + Fear + Cowardice) + Knowledge of right and wrong = A person who is able to tell the truth and do the right thing.

Explaination of the Truth Formula In order to tell the truth and to be a truthful person someone has to have an abundance of Courage, Wisdom and Understanding. This needs to be coupled with Right Judgement and the ability to know what is right and what is wrong. There has to be no bias, fear, lies and cowardice.