"Your most unhappy customers are your greatest source of learning."
"It's fine to celebrate success, but it is more important to heed the lessons of failure."
"We always overestimate the change that will occur in the next two years and underestimate the change that will occur in the next ten. Don't let yourself be lulled into inaction."
"If you are born poor it's not your mistake, but if you die poor it's your mistake."
"It's not about how much you read; it's about what you read."