If I had to qualify Lincoln's truthfullmess I would have to say He was expediciously honest.

He used personal humor which is one of the most powerful honesty tools in the world with great success.


He was psychologicly honest. One answers with kindness when ones wife asks if her butt looks too big in this dress.

He knew himself at the cost of much distress which allowed him to be honest with himself and speak honestly to kindred spirits who had the same feelings of loss and thankfullness that moved in his own heart.