Quote about making simple things complicated and complex things simple

I'm sure I have heard a quote in the past from someone famous (maybe Einstein? maybe not) about how it is easy to make something complicated but extremely difficult to make something simple.

Is there a well-known quote about this?

Thanks

Maybe you're looking for

"Any intelligent fool can make things bigger and more complex... It takes a touch of genius --- and a lot of courage to move in the opposite direction." http://www.alberteinsteinsite.com/quotes/einsteinquotes.html

I'm sure there are more quotes attributed to Einstein than he could ever have spoken. The only related quote that may fit could well have been his; "Things should be a simple as possible but no simpler." It is a great sentiment whether it is his or not.

There is the well-known (by writers) quotation:

I'm sorry this letter is so long. I didn't have time to make it shorter.

This is attributed to many people including (of course) Mark Twain. The original may have been Pascal's:

I didn't have time to write a short letter, so I wrote a long one instead.

And when Woodrow Wilson was asked how much time it took to prepare a speech, he said:

That depends on the length of the speech,” answered the President. “If it is a ten-minute speech it takes me all of two weeks to prepare it; if it is a half-hour speech it takes me a week; if I can talk as long as I want to it requires no preparation at all. I am ready now.

Most of these are on Quote Investigator