中文导读
《道德书简》是塞内卡晚年写给朋友卢基里乌斯（Lucilius）的一百二十四封书信，大约写于公元 62 至 65 年间——即塞内卡自杀前最后几年。这不是系统的哲学著作，而是一位饱经世故的老人对年轻人的日常忠告：如何管理时间、如何面对死亡、如何对待朋友、如何阅读、如何控制愤怒、如何对待财富。
塞内卡的斯多葛哲学不是学院里的教条辩论，而是活生生的实践指南。第一封信《论节约时间》就直击要害：你总是说"等有时间了再学哲学"，但你的时间正在流逝——每一天都是你生命的一部分，每一小时都不再回来。第七封信《论拥挤的人群》劝卢基里乌斯不要去看角斗：那些场面会腐蚀你的道德直觉。第四十一封信《论心中的神》说：你心里有一个神圣的东西——理性——它不比任何神庙里的神像差。第四十七封信《论主奴关系》是古代最激进的平等主义文本之一：奴隶和你一样是人，他可能和你一样善良；善待你的奴隶，因为他们是你命运共同体的一部分。
蒙田把塞内卡当作最亲密的精神伙伴——他在《随笔集》中大量引用这些书信。现代自助文学从爱比克泰德到瑞安·霍利迪（Ryan Holiday）都继承了塞内卡"哲学即生活实践"的传统。
本选本收录第一、二、十三封全文。
Letter 1: On Saving Time
Continue to act thus, my dear Lucilius—set yourself free
for your own sake; gather and save your time, which till lately
has been taken from you, or filched away, or has merely slipped
through your fingers. Make yourself believe the truth of my words—
that certain moments are torn from us, that some are gently removed,
and that others glide beyond our reach. The most disgraceful
kind of loss, however, is that due to carelessness. You will find
no one willing to distribute his money; but to how many does each
of us distribute his life! Men are frugal in guarding their personal
property; but as soon as it comes to squandering time they are
most wasteful of the one thing in which it is right to be stingy.
I would not lay claim to anything that belongs to another;
I am only trying to recover my own property. For time is the one
thing that Nature has given us, and it is the only thing
that she demands back. You may say: "But my time is my own."
Is it? When did you last take a careful account of how you spent
your day? You were born with a limited supply; each day that passes
is a day subtracted from the total. The time that has gone by
is dead; only the present is alive. And even this present
is not truly yours, for you are constantly losing it, and the loss
is irretrievable.
So hold every hour in your grasp. Lay hold of to-day's task,
and you will not need to depend so much upon to-morrow's.
While we are postponing, life speeds by. Nothing, Lucilius,
is ours, except time. All else belongs to fortune.
Letter 2: On Discursiveness in Reading
The primary indication of a well-ordered mind is a man's ability
to remain in one place and linger in his own company. But be careful
lest this reading of many authors and books of every sort
may tend to make you discursive and unsteady. You must linger among
a limited number of master-thinkers and digest their works,
if you would derive ideas which shall win firm hold in your mind.
Everywhere means nowhere. When a person spends all his time
in foreign travel, he ends by having many acquaintances but no friends.
The same is true of the man who is a devotee of many authors.
You cannot feast all day on a great variety of dishes; you must select
a few and let your mind feed on them.
So with books—choose a few good ones and stick to them.
Each day, after you have read a little, try to reflect on what you
have read. For reading without reflection is like eating without
digestion. The food is taken in, but it does not nourish.
It is the same with reading: the words pass through the mind,
but they do not become part of it.
Letter 13: On Groundless Fears
I know that you are distressed because you have not yet heard
from your brother. But what is the use of distressing yourself
about what may or may not have happened? You are suffering
from an imaginary evil. For the present, you do not know
whether anything has happened; and yet you are already suffering
as if it had. The things that have not yet happened are uncertain—
they may happen, or they may not. Why anticipate sorrow?
There will be time enough for sorrow when the evil actually arrives.
Let us examine the things that make us afraid. Some of them
are real, but most of them are imaginary. We are afraid of poverty,
of disease, of death, of exile, of disgrace. But how many of these
things have actually happened to us? And of those that have happened,
how many were as bad as we feared? We are more often frightened
than hurt; we suffer more in imagination than in reality.
The wise man does not fear the future; he prepares for it.
He does not say: "Perhaps this will not happen," but rather:
"If it happens, I shall be ready." For there is nothing
that cannot be endured, if the mind is prepared. Poverty?
Many have lived happily in poverty. Disease? It tests our courage.
Exile? We can find friends everywhere. Death? It is the end
of all suffering. No evil is great enough to overwhelm
a well-prepared mind.
Therefore, my advice to you is this: do not anticipate trouble,
or worry about what may never happen. Keep in the present.
The future is not yet here; the past is gone; only the present
is yours. And if you can keep your mind on the present,
you will not be afraid of the future.