"Though sincerity and confidence have many points of resemblance, they have yet many points of difference. Sincerity is an openness of heart, which shows us what we are, a love of truth, a dislike to deception, a wish to compensate our faults and to lessen them by the merit of confessing them."
January 1, 1970
https://en.wikiquote.org/wiki/Fran%C3%A7ois_de_La_Rochefoucauld