Knowledge is a bag of rocks carried upon the shoulders. Wisdom is a pocketful of feathers. Some of the most ‘intelligent’ people are woefully short in the category of common sense and street smarts. It is the wise one who discards a piece of knowledge every day. We fill our minds so full of the useless, we have little room for the useful. Sometimes, the less we know, the more we understand. It seems quite contrary, but it is true.