A man of knowing attains to a sense of humour. Let this always be remembered. If you see someone who has no sense of humour, know well that that man has not known at all. If you come across a serious man, then you can be certain that he is a pretender. Knowing brings sincerity but all seriousness disappears. Knowing brings a playfulness; knowing brings a sense of humour. The sense of humour is a must.