Silence.

«What if I told you that precise moment was chosen by three famous masons — george washington, benjamin franklin, and pierre l’enfant, the primary architect for d.c.?»

More silence.

«Quite simply, the cornerstone was set at that date and time because, among other things, the auspicious Caput Draconis was in Virgo.»

Everyone exchanged odd looks.

«Hold on,» someone said. «You mean. . like astrology?»

«Exactly. Although a different astrology than we know today.»

A hand went up. «You mean our Founding Fathers believed in astrology?»

Langdon grinned. «Big-time. What would you say if I told you the city of Washington, D.C., has more astrological signs in its architecture than any other city in the world — zodiacs, star charts, cornerstones laid at precise astrological dates and times? More than half of the framers of our Constitution were Masons, men who strongly believed that the stars and fate were intertwined, men who paid close attention to the layout of the heavens as they structured their new world.»

«But that whole thing about the Capitol cornerstone being laid while Caput Draconis was in Virgo — who cares? Can’t that just be coincidence?»

«An impressive coincidence considering that the cornerstones of the three structures that make up Federal Triangle — the Capitol, the White House, the Washington Monument — were all laid in different years but were carefully timed to occur under this exact same astrological condition.»

Langdon’s gaze was met by a room full of wide eyes. A number of heads dipped down as students began taking notes.

A hand in back went up. «Why did they do that?»

Langdon chuckled. «The answer to that is an entire semester’s worth of material. If you’re curious, you should take my mysticism course. Frankly, I don’t think you guys are emotionally prepared to hear the answer.»

«What?» the person shouted. «Try us!»

Langdon made a show of considering it and then shook his head, toying with them. «Sorry, I can’t do that. Some of you are only freshmen. I’m afraid it might blow your minds.»

«Tell us!» everyone shouted.

Langdon shrugged. «Perhaps you should join the Masons or Eastern Star and learn about it from the source.»

«We can’t get in,» a young man argued. «The Masons are like a supersecret society!»

«Supersecret? Really?» Langdon remembered the large Masonic ring that his friend peter solomon wore proudly on his right hand. «then why do masons wear obvious masonic rings, tie clips, or pins? why are masonic buildings clearly marked? why are their meeting times in the newspaper?» langdon smiled at all the puzzled faces. «my friends, the masons are not a secret society. . they are a society with secrets.»

«Same thing,» someone muttered.

«Is it?» Langdon challenged. «Would you consider Coca-Cola a secret society?»

«Of course not,» the student said.

«Well, what if you knocked on the door of corporate headquarters and asked for the recipe for Classic Coke?»

«They’d never tell you.»

«Exactly. In order to learn Coca-Cola’s deepest secret, you would need to join the company, work for many years, prove you were trustworthy, and eventually rise to the upper echelons of the company, where that information might be shared with you. Then you would be sworn to secrecy.»

«So you’re saying Freemasonry is like a corporation?» «Only insofar as they have a strict hierarchy and they take secrecy very seriously.»

«My uncle is a Mason,» a young woman piped up. «And my aunt hates it because he won’t talk about it with her. She says Masonry is some kind of strange religion.»

«A common misperception.»

«It’s not a religion?»

«Give it the litmus test,» Langdon said. «Who here has taken Professor Witherspoon’s comparative religion course?»

Several hands went up.

«Good. So tell me, what are the three prerequisites for an ideology to be considered a religion?»

«ABC,» one woman offered. «Assure, Believe, Convert.»

«Correct,» Langdon said. «Religions assure salvation; religions believe in a precise theology; and religions convert nonbelievers.» He paused. «Masonry, however, is batting zero for three. Masons make no promises of salvation; they have no specific theology; and they do not seek to convert you. In fact, within Masonic lodges, discussions of religion are prohibited.»

«So. . Masonry is anti religious?»

«On the contrary. One of the prerequisites for becoming a Mason is that you must believe in a higher power. The difference between Masonic spirituality and organized religion is that the Masons do not impose a specific definition or name on a higher power. Rather than definitive theological identities like god, allah, buddha, or jesus, the masons use more general terms like supreme being or great architect of the universe. this enables masons of different faiths to gather together.»

«Sounds a little far-out,» someone said.

«Or, perhaps, refreshingly open-minded?» Langdon offered. «In this age when different cultures are killing each other over whose definition of God is better, one could say the Masonic tradition of tolerance and open-mindedness is commendable.» Langdon paced the stage. Moreover, Masonry is open to men of all races, colors, and creeds, and provides a spiritual fraternity that does not discriminate in any way.»

«Doesn’t discriminate?» A member of the university’s Women’s Center stood up. «How many women are permitted to be Masons, Professor Langdon?»

Langdon showed his palms in surrender. «A fair point. Freemasonry had its roots, traditionally, in the stone masons’ guilds of Europe and was therefore a man’s organization. Several hundred years ago, some say as early as 1703, a women’s branch called Eastern Star was founded. They have more than a million members.»

«Nonetheless,» the woman said, «Masonry is a powerful organization from which women are excluded.»

Langdon was not sure how powerful the Masons really were anymore, and he was not going to go down that road; perceptions of the modern Masons ranged from their being a group of harmless old men who liked to play dress-up. . all the way to an underground cabal of power brokers who ran the world. The truth, no doubt, was somewhere in the middle.

«Professor Langdon,» called a young man with curly hair in the back row, «if Masonry is not a secret society, not a corporation, and not a religion, then what is it?»

«Well, if you were to ask a Mason, he would offer the following definition: Masonry is a system of morality, veiled in allegory and illustrated by symbols.»

«Sounds to me like a euphemism for ‘freaky cult.’ »

«Freaky, you say?»

«Hell yes!» the kid said, standing up. «I heard what they do inside those secret buildings! Weird candlelight rituals with coffins, and nooses, and drinking wine out of skulls. Now that’s freaky!»

Langdon scanned the class. «Does that sound freaky to anyone else?»

«Yes!» they all chimed in.

Langdon feigned a sad sigh. «Too bad. If that’s too freaky for you, then I know you’ll never want to join my cult.» silence settled over the room. the student from the women’s center looked uneasy. «You’re in a cult?»

Langdon nodded and lowered his voice to a conspiratorial whisper. «Don’t tell anyone, but on the pagan day of the sun god Ra, I kneel at the foot of an ancient instrument of torture and consume ritualistic symbols of blood and flesh.»

The class looked horrified.

Langdon shrugged. «And if any of you care to join me, come to the Harvard chapel on Sunday, kneel beneath the crucifix, and take Holy Communion.»

The classroom remained silent.

Langdon winked. «Open your minds, my friends. We all fear what we do not understand.»

The tolling of a clock began echoing through the Capitol corridors.