None of the threats to the global commons will be solved by building walls.

Life is not an on and off switch. You don't have to have a military that is either in hard combat or is in the barracks.

Walls don't work. ... Instead of building walls to create security, we need to build bridges.

No one person, no one alliance, no one nation, no one of us is as smart as all of us thinking together.

None of the threats to the global commons will be solved by building walls.