It's harder to build a good chair than to build a skyscraper.
One forges one's style on the terrible anvil of daily deadlines.
Less is more.
You can be a mason and build 50 buildings, but it doesn't mean you can design one.
A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.
Design is not just what it looks like. Design is how it works.