These books altered or expanded my perspective in a memorable way:

Candide

Seneca’s Epistles

Epictetus’ Handbook

(The Practicing Stoic is a great compilation/guide)

Maxims of La Rochefoucauld

Tao Te Ching (Red Pine translation)

The Portable Nietzsche (Walter Kaufmann translation)

Siddhartha, Demian by Herman Hesse

The Myth of Sisyphus, The Rebel by Albert Camus

How We Live and Why We Die: The Secret Lives of Cells

The Unique and Its Property/The Ego and Its Own

How I Found Freedom in an Unfree World

The Cowboy Havamal

Hayek’s Challenge

Mises: The Last Knight of Liberalism

Economics in One Lesson

The Bitcoin Standard, The Fiat Standard