Cynicism is an attitude or state of mind characterized by a general distrust of others' motives. A cynic may have a general lack of faith or hope in the human species or people motivated by ambition, desire, greed, gratification, materialism, goals, and opinions that a cynic perceives as vain, unobtainable, or ultimately meaningless and therefore deserving of ridicule or admonishment. A common misapplication of this attitude involves its attribution to individuals who emote well-thought-out expressions of skepticism. Such miscategorization may occur as the result of either inexperience and/or a belief system in which the innate goodness of man is considered an important tenet or even an irrefutable fact. Thus, contemporary usage incorporates both a form of jaded prudence and (when misapplied) realistic criticism or skepticism. The term originally derives from the ancient Greek philosophers, the Cynics, who rejected all conventions, whether of religion, manners, housing, dress, or decency, instead advocating the pursuit of virtue in accordance with a simple and idealistic way of life.