“To be great—concentrate”

-Orson Sweet Marden

Marden is basically saying that in order to be great, you need to concentrate. Concentration is always needed to be great in a certain subject or area or even just to be a great person overall. So you can kind of say/conclude that being a good concentrator will also mean being great at something. Or vice versa, being great at something means you are a good concentrator. Either way you can say that you need both of these things in order to succeed! Always choose the right.