In his memoir, The World of Yesterday, the Austrian writer Stefan Zweig looked back on Europe before the First World War. That was, he wrote, the Golden Age of Security, when institutions such as ...

No one is shouting “aliens” yet—not by a long shot—but the detection ... Our first hint at life on another world is likely going to be a faint chemical signal that scientists just can ...

The Constitution speaks of the “common defense.” But that means of Americans, not the world. Most importantly, that also means defense. Not conducting grand crusades around the globe to bring ...

The Europeans of Zweig’s youth did not grasp the fragility of their world, with its growing domestic tensions and fraying international order. Many of us in today’s West have suffered the same ...