Everybody has knowledge, but not everybody is wise. Wisdom is the ability to use that knowledge effectively. Contrary to what everybody thinks and have said here already, wisdom is not dependent upon age. I know many young people who are far more wise than much older adults.
These people who are saying "wisdom comes with age and experience" have, in effect, become fools in their statements. Although it is true that there may be times where someone who is wise indeed was aged and had experience chinchin.jingyun