The use of a thing is only a part of its significance. To know anything thoroughly, to have the full command of it in all its appliances, we must study it on its own account, independently of any special application. Johann Wolfgang von Goethe
Knowing is not enough; we must apply. Willing is not enough; we must do. See image Johann Wolfgang von Goethe
The really unhappy person is the one who leaves undone what they can do, and starts doing what they don't understand; no wonder they come to grief. See image Johann Wolfgang von Goethe