Today, I'm quoting from the Chesterton book, a paragraph from Lunacy and Letters titled Trading Mirth for Madness (I like a bit of both!):
You cannot be too solemn about golf to be a good golfer; you can be a great deal too solemn about Christianity to be a good Christian. You may put into your neckties solemnity, and nothing but solemnity, because neckties are not the whole of your life - at least, I hope not. But in anything that does cover the whole of your life - in your philosophy and your religion - you must have mirth. If you do not have mirth you will certainly have madness.
I wish you all a mirthful day.