Tim Kaine has been obviously a governor. He's been a senator. He's one of the smartest rising stars in the Democratic Party. He is very plausible as someone who could sit in and be president.

Certainly, the country can't have two presidents at once, so the tradition has been to hang back if you're the president-elect and wait for your time in office. [Donald] Trump is not a hang-back kind of guy.

The teachers union may not like Betsy DeVos, but she's clearly within the range of Republican policy-makers.

The government is supposed to provide a level playing field where people can compete fairly. It's not supposed to cut deals with one company or another to do so.

It's hard for parents just to measure schools.

Empathy makes you more aware of other people's suffering, but it's not clear it actually motivates you to take moral action or prevents you from taking immoral action.

On the [Andrew] Puzder point, I do agree there has been a double standard.