The biggest challenge or biggest crisis knocking on the doors of humankind is fear and intolerance.

Denial of childhood and denial of freedom are the biggest sins which humankind has been committing and perpetuating for ages.

The biggest challenge I have with Washingtonians is they think Illinois is exclusively a Democratic state.

As a company grows, communication becomes its biggest challenge.

We only need 145 more votes, and we're going to be knocking on doors...we're going to go get them.

The biggest challenge is how to affect public attitudes and make people care.