There are a thousand no's for every yes.

When you're trying to solve a problem on a new product type, you become completely focused on problems that seem a number of steps removed from the main product. That problem solving can appear a little abstract, and it is easy to lose sight of the product.

The quest for simplicity has to pervade every part of the process. It really is fundamental.

The most important thing is that you actually care, that you do something to the very best of your ability

The absence of clutter is just a clutter-free product. That's not simple.

If something is not good enough, stop doing it.

When something exceeds your ability to understand how it works, it sort of becomes magical.