Wisdom is not:
No. It is never right to be selfish. God will provide a way for those who give. What goes around comes around.
It is also wrong to not believe that one cannot be wrong, but it is a matter of pride, not wisdom.
Not everything not taught in books. Some books teach wisdom. It is merely good ideas that are not intelligence, to simpllify it into English.
Wisdom is...very hard to define.
It's the ability to understand and act on that understanding in a variety of situations. Experience, intelligence, foresight, cleverness...many things make you wise...but the real test of wisdom is how you go about using it.
It's a real abstract concept to pin down in a few words...but if I had to come up with something, I'd say it's thinking things through. That's probably the closest I can come to outright defining it.
Wisdom doesn't require experience, necessarily. Anyone read proverbs? (Not the Biblical book, just any from any culture)
Yes, but proverbs do not require experience.
Wisdom is not a well defined concept, and so is generally decided by a post-hoc decisions calling a range of actions 'wise' and then saying thats what wisdom is. However as it lacks a strict definition what actions you define as wise can easily be argued to be unwise by others, as they're applying a different definition of wisdom, and neither of them are wrong as there is no firm consesus on what wisdom is.Edit: Wow, didn't realise this topic was so old; figured it was on the front page so still recent. Apologies for zombiefying it.