I don't know GM Planas so I can't parse that quote for how it fits in with his actual 'wholistic' view.
I do feel that it must be out of context as it appears to rather miss the point of how life experiences should change you.
Things happen to you, you mature (hopefull) and learn, thus shaping your perception of the world. Wise men are not those who refused to change their minds - they are the ones who took what life offered them in terms of experience and used it as a forge for their consciousness.
You have to take care in the 'tempering' process so that you do not become either too hard (and thus brittle) or too ductile (and thus overly malleable) but the great advantage of the human mind is that it can deal with non-absolutes. Things do not have to be "0" or "1" and that is what gives us mental flexability and the ability to 'intuit' an answer from incomplete evidence.
Well, getting a bit deep there for someone whose supposed to be packing his bags to go run around with sharps :lol:.
Thats the best way I've heard it put. Can't add anything to that!. :high5: