TO lie is to utter an untruth, with full knowledge that it is an untruth. The untruth may be expressed by any conventional sign, by word, deed, gesture, or even by silence. Its malice and disorder consists in the opposition that exists between our idea and the expression we give to it; our words convey a meaning contrary to what is in our mind; we say one thing and mean another. If we unwittingly utter what is contrary to fact, that is error; if we so clumsily translate our thoughts as to give a false impression of what we mean, and we do the best we can, that is a blunder; if in a moment of listlessness and inattention we speak in a manner that conflicts with our state of mind, that is temporary mental aberration. But if we knowingly give out as truth what we know is not the truth, we lie purely and simply. In misrepresentations of this kind it is not required that there be a plainly formulated purpose of deceiving another; an implicit intention, a disposition to allow our words to run their natural course, is sufficient to give such utterances a character of mendacity. For, independently of our mental attitude, it is in the nature of a lie to deceive; an intention, or rather a pretense to the contrary, does not affect that nature. The fact of lying presupposes that we intend in some manner to practise deception; if we did not have such a purpose we would not resort to lying. If you stick a knife into a man, you may pretend what you like, but you did certainly intend to hurt him and make him feel badly. Nor has any ulterior motive we may have in telling an untruth the power to change its nature; a lie is a lie, no matter what prompted it. Whether it serves the purpose of amusement, as a jocose lie; or helps to gain us an advantage or get us out of trouble, as an officious lie; or injures another in any way, as a pernicious lie: mendacity is the character of our utterances, the guilt of willful falsehood is on our soul. A restriction should, however, be made in favor of the jocose lie; it ceases to be a lie when the mind of the speaker is open to all who listen and his narration or statement may be likened to those fables and myths and fairy tales in which is exemplified the charm of figurative language. When a person says what is false and is convinced that all who hear him know it is false, the contradiction between his mind and its expression is said to be material, and not formal; and in this the essence of a lie does not consist.