Name: Proofs and Theories
Price: 18.19 EUR

Our all time favorite reads. If you ask us for a recommendation, we'll start with these.

Our Picks

Get your books hot off the press! New releases coming out every week.

New Releases

The Portuguese language has travelled far and wide across the globe. Its rich literary community includes authors from Europe, Latin America, Africa, and Asia. Discover Lusophone authors old and new in translation.

Lusophone Authors

Small ou independent presses are publishing houses that do not make part of the big five companies that publish most of the books in the world. These independent publishers are some os the great taste makers of our time, taking chances on books beyond their commercial appeal.

Small Presses

The Vintage Minis, are the perfect collection to sample some of the world's most renowned authors, each in a subject they are experts in.

Vintage Minis

Our booklists are curated from the diverse personal tastes and interests of our team. We organize these lists around themes to highlight exciting reads that you might not otherwise encounter.&nbsp;

Booklists

Our Literary fiction category encompasses everything from the historical narratives, to modern day ones. Here you will find a broad selection of novels, from the genre bending to the realistic.

Literary Fiction

Immerse yourself in the beauty of verse and the power of words.

Poetry

Collections from established and new story tellers.

Short Stories

Romance

Ghost stories, slashers, and all the gore in between.

Horror

Thrillers, detective novels, true crime, and everything in between.

Mystery & True Crime

From riding spaceships to dragons, everything here is out of this world!

Sci-Fi & Fantasy

Graphic novels ranging in genre and artistic styles, from writers and artists across the world.

Graphic Novels

From the great classics to the experimental, our fiction collection encompasses the best of every genre to transport you to other worlds and other lives through many different narratives.&nbsp;

Fiction

Know the world with real stories, through eyes and words of those who lived them.

Memoir

Dive into personal and critical reflections on a wide range of topics.

Essays

Writings on writing, reading, and everything literary.

Lit Crit

Books on cooking and traveling. Find here your next destination or recipe.

Food & Travel

Nonfiction about global history and the people that defined it.

History & Biography

Explore the world of creativity, from timeless art to contemporary design.

Art, Architecture & Fashion

Engage with ideas that challenge and inspire, from ancient to modern times.

Philosophy & Religion

In this category you will find nonfiction titles on current events, politics, sociology, and culture. Everything that you need to understand the world we live in and the ideas that shape it.

Politics, Society & Current Events

Titles on the natural world, psychology, technology, and much more.

Science

In this list you'll find new culture, criticism, biography, and scientific writing alongside classics of each genre.&nbsp;

Nonfiction

Books from all genres for middle-grade readers ages 8-12 , and Young adults ages 13-17, and all who are still young at heart.

YA & Middle-Grade

Children's

Comics

Books to guide young readers through the first years of their reading lives.&nbsp;

Last chance to shop our Summer Sale! Enjoy discounts up to 30%, with over 100 sales titles in-stock and ready to ship.&nbsp;

Shop the Summer Sale

From August 12th-22nd, enjoy 30% off selected paperbacks and hardcovers. All sales titles are in-store and ready to ship, with 1-2 day delivery in mainland Portugal via DPD Express. Stock is limited, so shop now! All discounts are viewable in the cart.&nbsp;

Summer Sale's Last Chapter 

Shop All Books

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Summer Sale 2025

Browse our selection of English books, wander between the shelves, or ask us for a recommendation.&nbsp;

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Bookstore

A place to read, meet, or work. We serve specialty coffee, natural wine,  and small bites.

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Café

Good Company is centrally located in  Lisbon and easily accessible by metro, bus, bike, or car.

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Welcome to Good Company, visit our bookstore to browse our selection of English books, have a coffee or glass of wine in our cafe, or meet new friends at our events.

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Proofs and Theories

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