Go forward, knowing that you are greater than the challenges of your time.

In the zero-sum budget game, every dollar spent on this problem [illegal immigration] must be taken from somewhere else....No, we should not tolerate people immigrating illegally. But we need to treat this issue honestly and fairly.

Russians understand strength, and if they feel that their opponents are weak, they will take advantage of it.

The reason we've always had a civilian in that job [Secretary of Defence] is because we really believe that it is policymakers who ought to control the military and not have the military control the military.

My whole life has been dedicated to public service.

I think the primary message to the world is that the United States is going to remain the strongest military power in the world.

People elected Donald Trump because he acts decisively. He fired James Comey. He didn't fire the entire FBI. If there's something there, the FBI is going to continue to investigate it.