Who is the author of the quote "you always want you enemies to think you are weaker than you actually are "?

I remember hearing 2 american presidents (GWB and Bill Clinon) saying a quote resembling to "you always want you enemies to think you are weaker than you actually are "... I'd like to know the original quote and possibly the author of it . I know it's not Sun Tzu. But I'd like to read the writings of that author if any exist (if at all such an author exists)

Thank you guyz


Why do you say it's not Sun Tzu?

https://www.goodreads.com/quotes/202800-appear-weak-when-you-are-strong-and-strong-when-you