Frankly, I am not here to challenge the astute observation of Dr Maxwell Maltz, Knowledge Gives You Power as shown below, but I think it needs a little bit of qualification, to put it in context of today's world of learning. 

This is nonetheless my personal perspective.

If you were to read his Psycho-Cybernetics classic, even from front to back and back to front earnestly, and you just sit there thinking that you have grasped it all, and do nothing about it.

Sad to say, you have not gained any knowledge. At best, you have gained some "word experience" in your headspace.

Knowledge is not measured by what's stored in your head, especially after reading; it's always defined by your productivity, i.e. what you do and what you don't do.

Only after applying in the real-world with what you have just learned, then you would have gained what I call "world experience".

That's to say, you actually would know what worked, what didnt work, and what could work better, or faster, or smarter the next time around, with a little bit of tweaking, of course.

I like to take this opportunity to append some observations from other competent folks, just to add to this discourse of mine:

Enjoy!