Morale

Beyond Good and Evil

Friedrich Nietzsche

Nicomachean ethics

Aristotle ; translated, with an introduction and notes, by Martin Ostwald.

On liberty

John Stuart Mill.

Daring Greatly: How the Courage to Be Vulnerable Transforms the Way We Live, Love, Parent, and Lead

Brené Brown

Fear and trembling

Kierkegaard ; dialectical lyric by Johannes de silentio (Kierkegaard) ; translated with and introduction by Alastair Hannay.

The Righteous Mind: Why Good People Are Divided By Politics And Religion

Antonio Kuntz, Jonathan Haidt

On the genealogy of morals: a polemic : by way of clarification and supplement to my last book, Beyond good and evil

Friedrich Nietzsche ; translated with an introduction and notes by Douglas Smith.

Gorgias

Plato.

Meditations: A New Translation

Robin Waterfield, Gregory Hays

The discourses of Epictetus

edited by Christopher Gill ; translation revised by Robin Hard.