He was as wittily urbane as Congreve.

But all the witty things that one man can say may be numbered on one's fingers.

It was through his humour that Wilde reigned supreme.
It was his humour that lent his talk its singular attraction.

He was the only man I have ever met or heard of who could keep one smiling with amusement hour after hour.

True, much of the humour was merely verbal, but it was always gay and genial: summer-lightning humour, I used to call it, unexpected, dazzling, full of colour yet harmless.
Let me try and catch here some of the fleeting iridescence of that radiant spirit.