To have no time for philosophy is to be a true philosopher.

If we examine our thoughts, we shall find them always occupied with the past and the future.

There are some who speak well and write badly. For the place and the audience warm them, and draw from their minds more than they think of without that warmth.

The last act is bloody, however pleasant all the rest of the play is: a little earth is thrown at last upon our head, and that is the end forever.

You always bump into politics in life, and as a man, I'm party to a number of environmental issues that concern me first and foremost, as a man, as a father.

Cities are central to the shaping and delivery of national policy objectives, and in return, they are the places where social, environmental, and economic policies play out in practice.

The biggest barrier to dealing with climate change is us: our own attachment to habits that are hard to shift, and our great ability to park or ignore uncomfortable choices.

We have known since the 1800s that carbon dioxide traps heat in the atmosphere. The right amount keeps the climate conducive to human life.