Einstein held that imagination is more important than knowledge: 'I am enough of the artist to draw freely upon my imagination. Knowledge is limited. Imagination encircles the world.' I define ...

It is a classic with an odd title, though St. Ignatius Loyola opened his Spiritual Exercises with an explanation of the appellation. For, just as taking a walk, traveling on foot, and running are ...

“Imagination is the only weapon in the war against reality,” Lewis Carroll famously wrote in Alice in Wonderland. To the scientifically minded, in the pursuit of an ever-clearer picture of reality, ...