“Nature hates idleness in all its forms.”
She gives continuous life only to those elements which are in use. Tie up an arm, or any other portion of the body, taking it out of use, and the idle part will soon atrophy and become lifeless. Reverse the order, give an arm more than normal use, such as that engaged in by the blacksmith who wields a heavy hammer all day long and that arm (developed from within) grows strong.
Power grows out of organized knowledge, but mind you, it “grows out of it” through application and use.