Not going into the depths of all the apparently preachy stuff, let me just conclude by highlighting the purpose of this post.
Sail through life by learning what you should and unlearning what you should not have.
I guess this sums it all up. And, do ponder over the quote that introduces the post. If you have grasped the meaning of it, then, the next time someone tries to flaunt their "smartness" ( you know what I mean by that ) in front of you, you know what to do.
Knock them off with yours! ;)
Believe me, it works! And, that too, with absolute positivity! :)
Stay virtuous. Stay peaceful. :)