The day-to-day business of writing a novel often seems to consist of nothing but decisions — decisions, decisions, decisions. Should this paragraph go here? Or should it go there? Can that chunk of exposition be diversified by dialogue? At what point does this information need to be revealed? Ought I use a different adjective and a different adverb in that sentence? Or no adverb and no adjective? Comma or semicolon? Colon or dash? And so on.

These decisions are minor, clearly enough, and they are processed more or less rationally by the conscious mind. All the major decisions, by contrast, have been reached before you sit down at your desk; and they involve not a moment’s thought. The major decisions are inherent in the original frisson — in the enabling throb or whisper (a whisper that says, Here is a novel you may be able to write). Very mysteriously, it is the unconscious mind that does the heavy lifting. No one knows how it happens.

When, in 1960, Anthony Burgess sat down to write “A Clockwork Orange,” we may be pretty sure that he had a handful of certainties about what lay ahead of him. He knew the novel would be set in the near future (and that it would take the standard science-fictional route, developing, and fiercely exaggerating, current tendencies). He knew his vicious antihero, Alex, would narrate, and that he would do so in an argot or idiolect the world had never heard before (he eventually settled on a blend of Russian, Romany and rhyming slang). He knew it would have something to do with Good and Bad, and Free Will. And he knew, crucially, that Alex would harbor a highly implausible passion: an ecstatic love of classical music.

We see the wayward brilliance of that last decision when we reacquaint ourselves, after half a century, with Burgess’ leering, sneering, sniggering, sniveling young sociopath (a type unimprovably caught by Malcolm McDowell in Stanley Kubrick’s uneven but justly celebrated film). “It wasn’t me, brother, sir” Alex whines at his social worker, who has hurried to the local jailhouse: “Speak up for me, sir, for I’m not so bad.” But Alex is so bad; and he knows it. The opening chapters of “A Clockwork Orange” still deliver the shock of the new: a red streak of gleeful evil.