We always try to think in “realistic” terms about everything:

• “It can’t be done.”
• “What? Do you want to build an airplane? You’re crazy.”
• “You’ll never make it.”
• “Everyone fails and so will you.”
• “1,000 songs in your pocket? You must be kidding, right?”
• “An electrical car with a range of 300 miles? What’s next? A time machine?”
• “You want to be an artist? It’s safer to get a job.”
• “Why would you travel the world?”

What does it take when everyone tells you that you’re wrong? Delusion. At least, a little of it.