“Here are some Wilde quotes I found online. (Just feed “Oscar
Wilde quotes” into Google and you can instantly find reams of
this stuff.) Do any of them strike you as Ballardian?

The Literature Page  Quotations by Author
Oscar Wilde (1854 – 1900)

A little sincerity is a dangerous thing, and a great deal of it
is absolutely fatal.
Oscar Wilde

A man can be happy with any woman as long as he does not love
her.
Oscar Wilde

Always forgive your enemies; nothing annoys them so much.
Oscar Wilde

America had often been discovered before Columbus, but it had
always been hushed up.
Oscar Wilde

America is the only country that went from barbarism to
decadence without civilization in between.
Oscar Wilde

Anyone who lives within their means suffers from a lack of
imagination.
Oscar Wilde

Arguments are to be avoided; they are always vulgar and often
convincing.
Oscar Wilde

At twilight, nature is not without loveliness, though perhaps
its chief use is to illustrate quotations from the poets.
Oscar Wilde

Biography lends to death a new terror.
Oscar Wilde

Consistency is the last refuge of the unimaginative.
Oscar Wilde

[I've a feeling JGB actually used a version of that one!
"Accuracy is the last refuge of the unimaginative" -- in one of
his early sf reviews. -- DP]

Fashion is a form of ugliness so intolerable that we have to
alter it every six months.
Oscar Wilde

Genius is born–not paid.
Oscar Wilde

I always like to know everything about my new friends, and
nothing about my old ones.
Oscar Wilde

I am not young enough to know everything.
Oscar Wilde

I think that God in creating Man somewhat overestimated his
ability.
Oscar Wilde

I was working on the proof of one of my poems all the morning,
and took out a comma. In the afternoon I put it back again.
Oscar Wilde

Illusion is the first of all pleasures.
Oscar Wilde

It is a very sad thing that nowadays there is so little useless
information.
Oscar Wilde

Morality, like art, means drawing a line someplace.
Oscar Wilde

Most modern calendars mar the sweet simplicity of our lives by
reminding us that each day that passes is the anniversary of
some perfectly uninteresting event.
Oscar Wilde

Music makes one feel so romantic – at least it always gets on
one’s nerves – which is the same thing nowadays.
Oscar Wilde

One can survive everything, nowadays, except death, and live
down everything except a good reputation.
Oscar Wilde

One should always play fairly when one has the winning cards.
Oscar Wilde

Selfishness is not living as one wishes to live, it is asking
others to live as one wishes to live.
Oscar Wilde

Seriousness is the only refuge of the shallow.
Oscar Wilde

The aim of life is self-development. To realize one’s nature
perfectly – that is what each of us is here for.
Oscar Wilde

The only thing to do with good advice is pass it on. It is never
any use to oneself.
Oscar Wilde

The true mystery of the world is the visible, not the invisible.
Oscar Wilde

There are only two kinds of people who are really fascinating:
people who know absolutely everything, and people who know
absolutely nothing.
Oscar Wilde

Another idle parlour game: given that Stephen Fry is out of the 
question, what actor would play JGB in a bio-pic about him?