A lot of effort and money are - rightly - expended keeping the president physically safe. But it's up to the president to maintain a schedule that allows for refueling, so as to be physically and cognitively at his or her best at all times. That's what it means to be strong, tough, and truly fit for the highest office.

Trump's executive order on refugees, his endless petty feuds - with allies, with judges, with Arnold Schwarzenegger - his constant stream of up-is-down and down-is-up fabrications is outrageous.

If you want to have the clarity and steadiness to deal with that '3:00 A.M. phone call,' you should better have made sure that you're not running on empty when that phone rings.

Arianna Huffington Quotes