Also, on one's merits or according to one's merits. With regard only to the intrinsic quality of something or someone. For example, Who supports it doesn't matter; we have to consider the idea solely on its merits, or The agency doesn't care about her references but wants to hire candidates according to their merits. [Late 1800s]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.