This is, perhaps, the clearest description of profit I have ever had the privilege to read:

"Because resources are limited, the individual must place values on objects and
choose between them. He then profits by giving up something of one value for
something else of greater value to him. And since he will only enter exchanges in
which he believes he will profit, each exchange contains two profits.

You obtain your profit in return for providing profits to others ~ for having
satisfied their needs and desires. The more efficient you are in satisfying the desires of others, the more profit you will make."

And, whala! There it is!