"Let every one of us cultivate, in every word that issues from our mouth, absolute truth. I say cultivate, because to very few people — as may be noticed of most young children — does truth, this rigid, literal veracity, come by nature. To many, even who love it and prize it dearly in others, it comes only after the self-control, watchfulness, and bitter experience of years."
January 1, 1970
https://en.wikiquote.org/wiki/Truth