The grip is man’s connection to the world outside himself. The hands are where the subjective meets the objective. True intelligence does not reside in the brain, but in the hands
Sure, The Legend of Bagger Vance is about the game of golf, but I just loved this visual, and see it applying to things beyond golf.
It is in how the woodworker holds the chisel. How the painter holds the brush. The potter the clay. The writer the pen and the page (or keyboard).
The examples could go on and on.
The "grip" is where all of the work, discipline, curiosity, practice - it is where all of those come into reality. It is not the thought of a table that brings the table into existence, but the execution through the hands.
There is just something about working with your hands that satisfies in a very real way; in a way that mental exercises will never be able to compare.