Pramoedya Wrote It in His Head First
On Buru Island they took his pens. So he composed the Quartet aloud, from memory, and told it to the other prisoners until the paper finally came.
When they exiled Pramoedya Ananta Toer to the prison island of Buru in 1969, they took nearly everything, including, for years, the right to write at all. No paper, no pen, no way to set down a sentence. For a novelist this is meant to be a death. It was not. He composed the four novels that became the Buru Quartet the only way left to him: in his head, sentence by sentence, and then out loud.
He told the story to the other prisoners. In the evenings, in the barracks, he narrated the life of Minke, his young Javanese protagonist, aloud, as oral literature, the way stories were carried for millennia before anyone owned a notebook. The other men took on lighter work so he would have time to compose. They became his memory and his first readers at once. The book existed as sound, held in a hundred heads, long before it existed as ink.
There is something in this that returns writing to its oldest form, and in doing so exposes what most of us have forgotten. We think of composition as typing, as the screen, as the document. Pramoedya proves the document is only transcription. The real work happened in a place no guard could search: the ordered, patient, load-bearing memory of a man who had built the whole architecture before he was ever allowed to write a word of it down.

The Quartet, once finally on paper and then smuggled out, is not slight. This is Bumi Manusia, This Earth of Mankind, a sweeping account of the birth of Indonesian national consciousness under Dutch rule. It is structured, populated, argued. That such a thing was first assembled entirely in the mind, under conditions designed to destroy the mind, is one of the great facts of twentieth century literature.
It is also a lesson about constraint. Take away a maker's usual tools and one of two things happens: he stops, or he discovers the work was never in the tools. The perfumer told he cannot use a fashionable molecule, the cook denied the imported ingredient, the writer stripped of the pen, each is handed the same test. What is left when the equipment is gone? For Pramoedya, what was left was everything.
Read slowly, the Quartet rewards the patience it was made with. It was not dashed off, it could not be. Every sentence had to be worth memorising, because memorising was the only draft. There is a density to prose composed this way, a refusal of waste, that the frictionless keyboard rarely produces. Nothing survives in the head that has not earned its place there.
Keep his method somewhere near your desk. Not the imprisonment, which was a crime, but the discovery inside it: that the good version of the thing exists before the tools touch it, that if you cannot hold the shape of the work in your mind, the paper will not save you. Build it first where nothing can be confiscated.