There is a significant psychological price to being constantly aware of the variety of ways in which your activity might be tracked. To be blunt, it makes you feel crazy. That is why, if you want a quiet life, you shouldn’t make friends with security analysts: they tend to get drunk and describe the ways in which your phone can be turned into a listening device until the skin on the back of your neck starts to crawl, because it’s their job to know about such things. There is a non-zero cost to this sort of awareness.

In a choice between paranoid vigilance and easy participation, few choose paranoia. It’s just easier to change your behaviour. A friend who works in computer security told me that “the most important censorship happens between your head and your keyboard”. Self-censorship is significant in a world where, increasingly, as the tech journalist Quinn Norton observes, “falling in love, going to war and filling out tax forms looks the same: it looks like typing”.

If debating the Enlightenment has become tedious, one reason is that it has produced so many exercises in what old-fashioned religious believers still describe as apologetics – the defence of a pre-existing system of belief. Some of the many recent defences of the Enlightenment are better argued than others. What all of them have in common is that they aim to silence any doubt as to the truth of the creed. Mixing large doses of soothing moral uplift with hectoring attacks on those who wilfully turn their backs on the light, these secular sermons lack the flashes of humour and scepticism that redeem more traditional types of preaching.

Adamant certainty is the unvarying tone. Yet beneath the insistent didacticism of these apologists there is more than a hint of panic that the world has not yet accepted the rationalist verities that have been so often preached before. If the Enlightenment really does embody humanity’s most essential hopes, why do so many human beings persistently refuse to sign up to it?

But what was the actual impact of coffeehouses on productivity, education and innovation? Rather than enemies of industry, coffeehouses were in fact crucibles of creativity, because of the way in which they facilitated the mixing of both people and ideas. Members of the Royal Society, England’s pioneering scientific society, frequently retired to coffeehouses to extend their discussions. Scientists often conducted experiments and gave lectures in coffeehouses, and because admission cost just a penny (the price of a single cup), coffeehouses were sometimes referred to as “penny universities.” It was a coffeehouse argument among several fellow scientists that spurred Isaac Newton to write his “Principia Mathematica,” one of the foundational works of modern science.

Coffeehouses were platforms for innovation in the world of business, too. Merchants used coffeehouses as meeting rooms, which gave rise to new companies and new business models. A London coffeehouse called Jonathan’s, where merchants kept particular tables at which they would transact their business, turned into the London Stock Exchange. Edward Lloyd’s coffeehouse, a popular meeting place for ship captains, shipowners and traders, became the famous insurance market Lloyd’s.

And the economist Adam Smith wrote much of his masterpiece “The Wealth of Nations” in the British Coffee House, a popular meeting place for Scottish intellectuals, among whom he circulated early drafts of his book for discussion.

E-mail isn’t that different from mail. The real divide, historically, isn’t digital; it’s literary. The nineteenth century, in many parts of the West, including the United States, marked the beginning of near-universal literacy. All writing used to be, in a very real sense, secret, except to the few who knew how to read. What, though, if everyone could read? Then every mystery could be revealed. A letter is a proxy for your self. To write a letter is to reveal your character, to spill out your soul onto a piece of paper. Universal literacy meant universal decipherment, and universal exposure. If everyone could write, everyone could be read. It was terrifying.

ZXX, a typeface unreadable by computers. (Via @notjessewalker on Twitter.)

Once I heard a middle-aged lay preacher declare how uncomfortable she had always been with teachings about sin; now, she knew why: she had been sexually abused as a child, which made her not a sinner but a victim. She really seemed to believe this was a satisfactory solution to the problem of sin. To liberal Christians generally, even to those who are not survivors of childhood trauma, the idea of sin has become more and more offensive and its definition further and further separated from commonsense about human life and human nature: that all of us have experienced mistreatment and gotten our own back with interest, one way or another. Maturity can’t come about without the recognition of our own appalling behavior—and any special pleading for it—as just that. The Judaeo-Christian emphasis on pitiless self-examination—supported by the confidence in God’s love and care—is also the only possibility I know of (and I bet I’ve seen every kind of New Age spiritual-but-not-religious fad there is) for ending eons-old cycles of unthinking exploitation and revenge and becoming a species worthy of the belief that God created it for a transcendent purpose.
— Sarah Ruden, who never fails to provoke and instruct me.
[How can students improve as writers?] It’s hard to talk about something like that without sounding prescriptive, but I think that there’s a reluctance in all writers in early stages of their development to really commit themselves to trust their interests as being actually focused on things that are interesting. To realize that they do not have to talk in the same dialect that is being talked around them, in terms of literary convention and all the rest of it. Something that I sometimes say, and even sometimes believe, is that there has been a loss of the cult of genius. When I was younger, I remember going around totally deluded by the idea that other people might, in fact, be geniuses or at least be able to express this in any intelligible fashion. The idea that you might do something radically brilliant—that assumption is very empowering and it has given the world a lot of really interesting things to look at. It’s a side effect of the cult of normality—the idea that it would be preposterous and perhaps undesirable to single yourself out in that way. I think that’s why a lot of stuff that basically amounts to breaking china is seen as being creative when, in fact, it’s as subservient to prevailing norms as anything else is, as obedience to them would be.
I just wish that we could talk about books as if they are for use, not as symbols of enduring knowledge that must be preserved against the ravages of digital barbarians or as emblems of obdurate and blinkered resistance to inevitable change.

Three-dimensional typography by Oded Ezer