Memento mori, for the founder counting runway.

Antoninus Pius died at Lorium on the seventh of March, 161 AD, in the twenty-third year of his reign. He had ruled without a war. The watchword he gave the tribune that night was aequanimitas.

Marcus Aurelius, who had stood beside him for sixteen years, took up the empire that morning. He had been watching the man die for weeks; that was the practice. Memento mori is the older name for it. Memento mori names the time discipline that follows from accepting death.

A Singapore founder, in the last week of April 2026, kept three calendars open. The first was the runway calendar: fourteen months of cash at the current burn. The second was the company calendar: Wednesday with the lawyer for the SAFE conversion, Friday afternoon at One Marina Boulevard for the AGM. The third was the bedside calendar: her father, oncology ward, Mount Elizabeth Novena. Estimated fourteen weeks.

The runway number was on every founder’s whiteboard in the region. The fourteen-week number lived in her phone notes, where she did not look during the day.

Both numbers were honest. Only one was on the company calendar.

Memento mori asks the founder which number belongs there. The bookshop summary of the principle, the one that sells the Penguin Classics edition of Meditations each year[^1], reads: live each day as your last. Marcus lived each day as Antoninus had: in the office, doing the work, with the watchword aequanimitas. Memento mori is the discipline of doing the work with time as the limiting condition.

Seneca, banished by Claudius to Corsica, then recalled by Agrippina to tutor Nero, wrote the Letters for ten years before Nero made him use his own death. “It is not that we have a short time to live,” he wrote in the first letter to Lucilius, “but that we waste much of it.” The founder treating runway as the only finite quantity is wasting time the way Seneca describes. She is allocating a renewable resource (board meetings) against a non-renewable one (Wednesday mornings with her father), and the renewable resource is winning because she has not entered the non-renewable one into the calendar at all.

The discipline is the entry. The chair beside the hospital bed gets blocked off in the same calendar the AGM lives in. The investor who needs a Wednesday morning reschedule learns to reschedule. The board chair, in practice across the Singapore CBD, almost always accommodates; the few who do not are giving a signal. Rescheduling is the easy part. The cost is the version of the founder who was supposed to make both meetings without choosing.

The founder, on the Friday afternoon, made it to the AGM. She made it to Mount Elizabeth Tuesday, Thursday, Saturday, the Monday after. The father read the Straits Times obituary page from a tilted bed, as he had read it from a kitchen table for forty years. The founder, in her own forty years, had read an obituary page perhaps three times. She started reading them on the MRT, between Raffles Place and Novena.

The hand at the bedside, when the founder visited on the Tuesday after the AGM, was thinner than it had been the week before. The cap-table sheet, in the leather folio open at the foot of the bed, was the same revision she had carried into the AGM. Both pages were dated.

You could leave life right now, Marcus wrote in Book Two, near the end of the campaign. Let that determine what you do and say and think.

[^1]: The Penguin Classics edition of Meditations sells roughly sixty thousand copies a year in English. The number of those readers who finish the book past Book Three is, by the Penguin editor’s account, small. The discipline is not in the reading.