If you can't be persuasive to get people to believe your crazy idea, you can just go ahead and build it.

Glass really rewards risk. A lot of times with glass, you're just waiting for the piece to cool down or for some temperature to adjust, and there's split seconds where you've got a fraction of a second where you get to make a move a particular way, and you don't get to repeat it if you do it wrong.

It's hard to shape glass. It took me years of practice, and as a result, I've never gotten bored with it. It's difficult. Every time I come into the studio, I've got some sort of new challenge. And something that I would like to learn how to do better, and the material never disappoints me.

I've been totally replaced by people who are superior. I was doing, like, 15 different things. It's very gratifying to watch your job done better.

In December 1989, my mother died very suddenly, and that sparked a re-evaluation of what I was doing, and I realized I was mediocre at everything. I was a mediocre IBM employee, I was a mediocre entrepreneur, I was a mediocre artist. I decided that, although my mom wouldn't be around to see it, I wanted to be great at something.

St. Louis is a customer- and partner-rich environment for any financial tech startup.

At Square, we got our tech up and running in three weeks, but it took us 18 months to get licenses, banking relationships and everything else we needed to be able to move money. We had to partner up with major companies to do it.

I am absolutely confident that St. Louis can attract major players in technology and make the companies that are here blossom.

Personally, I don't want to do a lot of angel deals in a year. I get approached a lot. I'm becoming less and less polite, which doesn't seem to be helping. A lot of the things I get pitched on are from people who just want to make money.

It's obvious that St. Louis has certain advantages compared to other cities: namely, a concentration of financial services.