Letters 1-12. How to live, how to use time, how to face death. The tone is intimate — a philosopher writing to a friend.
Letters 13-21. On fear and anxiety. Most suffering is anticipatory — we torment ourselves with what might happen.
Letters 22-29. On withdrawal from public life and the difficulty of self-reform.
Letters 30-41. On death and the proper attitude toward it. Death is not an event in life but the frame around it.
Letters 42-52. On the choice of companions and the corrupting influence of crowds.
Letters 53-62. Philosophy as medicine for the soul. Daily incidents as starting points for Stoic reflection.
Letters 63-69. On grief, friendship, and the proper measure of emotion.
Letters 70-74. On suicide, slavery, and freedom. The slave who controls his mind is freer than the emperor who does not.
Letters 75-80. On progress in philosophy and the gap between aspiration and achievement.
Letters 81-83. On gratitude, drunkenness, and the philosopher's daily practice.
Letters 84-88. On reading, imitation, and liberal education. Letter 88: the famous critique of the liberal arts.
Letters 98-103. On the fickleness of fortune. External goods are loans, not gifts.
Letters 104-110. On travel and restlessness. You carry your troubles with you.
Letters 111-117. Technical questions of Stoic logic and ethics, pulled back to practical wisdom.
Letters 118-124. The final letters. On the nature of the good and how to distinguish true from apparent goods.
Letters on retirement, the approach of death, and the consolations of philosophy. Seneca prepares Lucilius — and himself — for the end.
The final letters. Seneca reflects on the body's decline, the vanity of grief, and the Stoic's readiness to die.