If you don't encounter setbacks in your career, if you don't have doubts and disappointments , let me tell you, you're not dreaming big enough.

The World Trade Center site will forever hold a special place in our city, in our hearts. But we would be untrue to the best part of ourselves and who we are as New Yorkers and Americans if we said no to a mosque in lower Manhattan.

I've always thought if we don't want to enforce laws on the books, we should remove them from the books. But when you have laws, you breed contempt if you don't enforce them.

The one thing computers have done is let us make bigger mistakes. We have to be careful not to depend on our machines.

Life is too short to spend your time avoiding failure.

I don't believe that government is good at picking technology, particularly technology that is changing. By the time you get it done and go through democracy, it's so outdated.

I have my own army in the NYPD, which is the seventh biggest army in the world.