One should ‘rehearse death’—continually familiarizing oneself with it—even though it happens only on… — Sénèque

One should ‘rehearse death’—continually familiarizing oneself with it—even though it happens only once, because we must most often practise precisely those things we cannot repeatedly test in reality.

By Sénèque, from Lettres à Lucilius

Key Arguments

Seneca introduces Epicurus’ maxim as his customary 'payment': 'In the meantime Epicurus will oblige me, with the following saying: ‘Rehearse death’, or – the idea may come across to us rather more satisfactorily if put in this form – ‘It is a very good thing to familiarize oneself with death.’'
He anticipates the objection that practice is unnecessary for a one‑time event: 'You may possibly think it unnecessary to learn something which you will only have to put into practice once.'
He turns this into the very reason for repeated mental practice: 'That is the very reason why we ought to be practising it. We must needs continually study a thing if we are not in a position to test whether we know it.'
The argument suggests that because we cannot ‘rehearse’ a real death and then correct mistakes, we must rehearse it in thought so that, when it comes, our response will be aligned with our philosophical convictions.

Source Quotes

Give me a fraction more time and payment will be made out of my own pocket. In the meantime Epicurus will oblige me, with the following saying: ‘Rehearse death’, or – the idea may come across to us rather more satisfactorily if put in this form – ‘It is a very good thing to familiarize oneself with death.’ You may possibly think it unnecessary to learn something which you will only have to put into practice once.

In the meantime Epicurus will oblige me, with the following saying: ‘Rehearse death’, or – the idea may come across to us rather more satisfactorily if put in this form – ‘It is a very good thing to familiarize oneself with death.’ You may possibly think it unnecessary to learn something which you will only have to put into practice once. That is the very reason why we ought to be practising it.

You may possibly think it unnecessary to learn something which you will only have to put into practice once. That is the very reason why we ought to be practising it. We must needs continually study a thing if we are not in a position to test whether we know it.

That is the very reason why we ought to be practising it. We must needs continually study a thing if we are not in a position to test whether we know it. ‘Rehearse death.’

Key Concepts

In the meantime Epicurus will oblige me, with the following saying: ‘Rehearse death’, or – the idea may come across to us rather more satisfactorily if put in this form – ‘It is a very good thing to familiarize oneself with death.’
You may possibly think it unnecessary to learn something which you will only have to put into practice once.
That is the very reason why we ought to be practising it.
We must needs continually study a thing if we are not in a position to test whether we know it.

Context

Near the end of Letter XXVI, Seneca appends an Epicurean maxim on rehearsing death and defends the practice against a superficial objection, arguing that precisely because death is a one‑time, unrepeatable event, it demands continual mental preparation.