Does anyone know this quote about quotes?

ok. its a quote about quotes. and how people shoudnt quote things they didnt say or how they should come up with their own stuff. I keep thinking robert frost because I was doing research o him at the time but im not sure if its him. I have this friend that quotes stuff all the time and I want to tell him this one for fun. so if anyone knows it id appreciate it. :]

its 'did you know that 75% of satistics and 'quotes' are made up on the spot'
dont know who said it though
I've heard a few variations though so im not sure which was the original one

not exactly what I was thinking of. thanks for trying though.

My favorite metaquote is:

Next to being witty yourself, the best thing is to quote another's wit
--Christian N. Bovee

You might find some info here:

quotationspage.com/quotes/Robert_Frost

Good luck !!

If this isn't it, it's similar at least... I love this quote. And Oscar.

'Most people are other people. Their thoughts are someone elses opinions, their lives a mimicry, their passions a quotation.'
Oscar Wilde