It was a sunny day, and Einstein merrily played with the telescope’s dials and instruments. Elsa came along as well, and it was explained to her that… - Walter Isaacson

What was remarkable was that associating with a computer and electronics company was the best way for a rock band to seem hip and appeal to young people. Bono later explained that not all corporate sponsorships were deals with the devil. “Let’s have a look,” he told Greg Kot, the Chicago Tribune music critic. “The ‘devil’ here is a bunch of creative minds, more creative than a lot of people in rock bands. The lead singer is Steve Jobs. These men have helped design the most beautiful art object in music culture since the electric guitar. That’s the iPod. The job of art is to chase ugliness away.

The other sins on his list were, in order: seeming uninterested, speaking too much about your own life, prying for personal secrets (“an unpardonable rudeness”), telling long and pointless stories (“old folks are most subject to this error, which is one chief reason their company is so often shunned”), contradicting or disputing someone directly, ridiculing or railing against things except in small witty doses (“it’s like salt, a little of which in some cases gives relish, but if thrown on by handfuls spoils all”), and spreading scandal (though he would later write lighthearted defenses of gossip).

Leonardo had also been wrestling with the question of why the sky appears blue, and around that time he had correctly concluded that it had to do with the water vapor in the air. In the Saint Anne painting, he portrays the sky’s luminous and misty gradations of blue as no other painter had done. The recent cleaning of the painting fully reveals the magical realism, veiled in vapors, of his distant mountains and skyline.