A year is an eternity in politics - though less than a moment in history.

I would say to those who don't like the metaphor This is reality.

The pace of global warming is accelerating and the scale of the impact is devastating. The time for action is limited - we are approaching a tipping point beyond which the opportunity to reverse the damage of CO2 emissions will disappear.

Never write when you can talk. Never talk when you can nod. And never put anything in an e-mail.

Yes, people pull the trigger - but guns are the instrument of death. Gun control is necessary, and delay means more death and horror.

My career was obviously cut shorter than I wanted it to be.

Imagine if investors in Wal-Mart really cared about bribery at that company's overseas operations or safety standards at its overseas manufacturing plants. If investors pulled their capital, corporate leaders would have to respond.