Pantip's Quote Header

“A wise man gets more use from his enemies than a fool from his friends.”
                                                                                 Baltasar Gracian.

In my opinion

It probably means
"That a wise man makes use of all the resources around him, whether they are standard or non-standard, while a fool doesn't learn or use even those resources available to him."

I  took  some opinions from this link  which I agree with it to show you on  my opinion.
http://answers.yahoo.com/question/index?qid=20130829123150AAvZ0HN



What is your opinion ?

PS.Thank you for kdunagin's kindness