When Xi Jinping came to power, there were a series of hints that market-based capitalism would be allowed to move forward under his leadership. At the first real threat, they've fallen over themselves to impose government control.

We can't drive our SUVs and eat as much as we want and keep our homes on 72 degrees at all times... and then just expect that other countries are going to say OK. That's not leadership. That's not going to happen.

We should be therefore supporting a larger Europe, and in so doing we should strive to expand the zone of peace and prosperity in the world which is the necessary foundation for a stable international system in which our leadership could be fruitfully exercised.

We shouldn't be debating whether to deal with the current code by allowing it to be extended or not. We should have a president who shows leadership and comes to Congress and says: 'You know what? We need to reform this whole tax code.'

We who reject Trump's bankrupt leadership must heal old wounds, reorient ourselves, and embrace common goals. And if there is one thing on which we can all agree, it's this: we cannot concede any ground.

Donald Trump was not asked by the leadership to change. And there's no reason for him to change. He's just won the primary process with a record number of votes, beating a field of 16 qualified candidates. So, there's no reason for Donald Trump to change.

Grades don't measure tenacity, courage, leadership, guts or whatever you want to call it. Teachers or any other persons in a position of authority should never tell anybody they will not succeed because they did not get all A's in school.

Leadership is an individual sport, one that has to be fine-tuned to each of the people that reports to you. Leaders also need to provide the direction, energy, encouragement and inspiration for each person who reports directly to the leader as well as for the overall organization.

We have treated our most serious adversaries, such as Iran and North Korea, in the most juvenile manner - by giving them the silent treatment. In so doing, we have weakened, not strengthened, our bargaining position and our leadership.

I don't pretend there aren't biological differences, but I don't believe the desire for leadership is hardwired biology, not the desire to win or excel. I believe that it's socialization, that we're socializing our daughters to nurture and our boys to lead.