Logos like 'Apple' are a different story. For someone who doesn't know the meaning behind the bite taken out of the apple, the logo is nothing but an icon. However if you do know that the bite refers to the Bible story of Adam and Eve, in which the apple represents the fruit of the Tree of Knowledge, your perception of the logo will change. From now on every time you see the Apple logo you will automatically associate it with an event that represents the company's core mission delivered in a simple yet very unique way. And this extra level of meaning is what makes logos like Apple true pieces of art.