First and foremost, we must exercise global leadership.

CENTERFORSECURITYPOLICY: Center for Security Policy | The Measure of a Superpower: A Two Major Regional Contingency Military for the 21st Century

We must exercise that duty responsibly.

CNN: Transcript: Opening statement of Rep. Nadler

We must all hope that he will exercise it to good effect in the time of testing ahead.

CENTERFORSECURITYPOLICY: Time of Testing

Though there are many more scientists who are extremely well qualified and have reached the same conclusions we have, we stress again that science is not a democratic exercise and our conclusions must be based on observational evidence.

WSJ: Concerned Scientists Reply on Global Warming