Joy is the perception of beauty, unlike happiness, which is because of something. Joy is singing of the heart, a feeling of praise.
Where is the wisdom we have lost in knowledge? Knowledge gives us information. Wisdom gives us light on the way. Knowledge is skill. Wisdom is a quality. Knowledge can be learned. Wisdom can only be distilled from those places in life where knowledge is not enough to really explain what was happening to us, or information failed to resolve what was happening to the other.