But I had never drawn on a tablet before. I've been doing pencil and paper and film for almost 20 years. I wanted to try something different. I wanted to teach myself some digital stuff in advance of a bigger feature project that's coming up, and I took to it really quickly.

To me, that's where memories are very interesting because what happens when we start losing memories? What happens when you can't take your memories with you? Who are we without our memories, without our past?

I frequently run into this, where I genuinely feel like - and this is not just my head cold talking right now - I often, and this is going to sound weird, but I often feel like the guy who makes these movies is smarter than me. Smarter than the guy on the phone right now.

I still have the same outlook on things that I did 10, 20 years ago. As an animator, there’s no career path that you can follow; there’s very few people doing this that you can look to and pinpoint the mistakes. It hasn’t changed since I was little. You have interests and follow them and strange things happen, organically or not.

What's interesting is when you talk about that - "living forever" or as long as you possibly can - what you really want is a continuance of your memories and your experiences. If I said you could live another 200 years, but we'd have to reboot you, that's not attractive. Nobody wants that as much as a continuance of your experience.

Fighting a cold, but I'm powering through. As they say, there's nothing better for a cold than doing interviews all day.

It's great for me to hear those different reactions because when I travel with a movie like this [World of Tommorow], it's very similar. You'll hear a line in one city get a big laugh, and then in another city, the same line kind of gets a gasp, and that's wonderful.