It really depends on the purpose of the speech. If it is for entertainment, then humor will be more important than substance. An after dinner speech is one such example. People would expect you to make them laugh more than to make them learn. Can you imagine someone preaching about the seven effective habits of highly successful people after a six-course meal?
However, if your purpose is to inform, persuade or inspire, substance will be indispensable. Patricia Fripp, a well-respected speaker in the industry defined substance as “what makes an audience’s business and personal life better if they act on it”. It could come in the form of a three-step strategy, a recommended book to read or tips to solve a particular problem. If there is no substance in your speech, then there is really no point wasting your audience’s time delivering it.
As a rule of thumb, focus on substance and then tweak the humor level according to your competence and appropriateness. For someone who has a knack for making his audience laugh at cue, he can leverage on humor to increase memorability of his message or even disarm the tough nuts and persuade them to his way of thinking. Otherwise, concentrate on increasing value for your audience. It is a sure-fire way to win your audience over, even without humor!
Style of presenting a speech, on the other hand, lies outside the humor-substance pie. You cannot switch on and off a style since it is part of who you are. However, your style can be polished with more stage time. The more you get up to the platform to speak, the more comfortable and aware you become of your style. And it can inevitably become a weapon you use to personalize your speech. If you are interested to learn how you can “find” and hone your style of speaking, refer to this online entry:
[http://blog.ericfeng.com/how-to-find-your-own-speaking-style]