We shall not build a great structure on such a foundation as this. If we correlate the different stages of wit to the mental dispositions favorable to them we may say: The _jest_ has its origin in the happy mood; what seems to be peculiar to it is an inclination to lower the psychic static energies (_Besetzungen_). The jest already makes use of all the characteristic techniques of wit and satisfies the fundamental conditions of the same through the choice of such an assortment of words or mental associations as will conform not only to the requirements for the production of pleasure, but also conform to the demands of the intelligent critic. We shall conclude that the sinking of the mental energy to the unconscious stage, a process facilitated by the happy mood, has already taken place in the case of the jest. The mood does away with this requirement in the case of _harmless_ wit connected with the expression of a valuable thought; here we must assume a particular _personal adaptation_ which finds it as easy to come to expression as it is for the foreconscious thought to sink for a moment into the unconscious. An ever watchful tendency to renew the original resultant pleasure of wit exerts thereby a lowering effect upon the still fluctuating foreconscious expression of the thought. Most people are probably capable of making jests when in a happy mood; aptitude for joking independent of the mood is found only in a few persons. Finally, the most powerful incentive for wit-work is the presence of strong tendencies which reach back into the unconscious and which indicate a particular fitness for witty productions; these tendencies might explain to us why the subjective conditions of wit are so frequently fulfilled in the case of neurotic persons. Even the most inapt person may become witty under the influence of strong tendencies. _Differences Between Wit and Dreams_