Honesty or truthfulness is a facet of moral character that connotes positive and virtuous attributes such as integrity, truthfulness, straightforwardness (including straightforwardness of conduct: earnestness), along with the absence of lying, cheating, theft, etc. Honesty also involves being trustworthy, loyal, fair, and sincere.
A reputation for honesty is denoted by terms like reputability and trustworthiness. Honesty about ones future conduct, loyalties, or commitments is called accountability, reliability, dependability, or conscientiousness.
Someone who goes out of their way to tell possibly unwelcome truths extends honesty into the region of candor or frankness. The Cynics engaged in a challenging sort of frankness like this called parrhêsia.
Radical honesty
Honesty is valued in many ethnic and religious cultures.
"Honesty is the best policy" is a proverb of Edwin Sandys, while the quote "Honesty is the first chapter in the book of wisdom" is attributed to Thomas Jefferson, as used in a letter to Nathaniel Macon. April 30 is national Honesty Day in the United States.
William Shakespeare described honesty as an attribute people leave behind when he wrote that "no legacy is so rich as honesty" in act 3, scene 5 of "All's Well that Ends Well."
Tolstoy thought that honesty was revolutionary: “No feats of heroism are needed to achieve the greatest and most important changes in the existence of humanity.... it is only needful that each individual should say what he really feels or thinks, or at least that he should not say what he does not think.”
Aleksandr Solzhenitsyn ("Live Not By Lies," 1974) and Václav Havel (The Power of the Powerless, 1978) agreed. Havel wrote:
[L]iving within the truth has more than a mere existential dimension (returning humanity to its inherent nature), or a noetic dimension (revealing reality as it is), or a moral dimension (setting an example for others). It also has an unambiguous political dimension. If the main pillar of the system is living a lie, then it is not surprising that the fundamental threat to it is living the truth.