In mathematics, the journey is just as important as the destination; the process of discovery is where the real learning happens.

If you scared, go to church.

The biggest challenge isn't the science - it's changing people's perceptions.

I don't hold grudges, I remember facts.

The best illustrations are those that leave room for the reader's imagination.

We've had three big ideas at Amazon that we've stuck with for 18 years, and they're the reason we're successful: Put the customer first. Invent. And be patient.

Sustainability isn't a choice; it's our responsibility to the next generation.