The best things are completely harmonious and can't be compartmentalized.
The beauty is in that it works, and perhaps not the appearance. We sense when there's been care taken with a product. Just in the same way we sense carelessness. One of the things that we strive to do for humanity, and it's a way that we can serve, is to take care.
Jonathan Ive's perception during a Vanity Fair event in response to questions from the public about finding a successful balance between functionality and design.