Cover: Open Library

Fundamentación para una metafísica de las costumbressecond-hand

93 readers want to read it on Open Library

Published by Alianza Editorial · Philosophy and religion · ISBN 9788420608495

from€13.48cover price €13.50

5 used offers · median €20.31

Total price with shipping, checked on 6 October 2026.

Published in 1785, this is the work in which Kant first sets out the foundations of his ethics, which he would later develop in the Critique of Practical Reason of 1788. Here he does so more accessibly, in plain language and with many examples.

Spoiler-free · Pecia's guide, written with AI and reviewed

Reading guide

About 4 hours of reading · Who it's for · Why people still read it · If you like it, read next
Who it's for
For philosophy students and readers who want to approach Kant's ethics through a short text. This edition, edited by Roberto R. Aramayo, includes an introductory study, a selected bibliography and indexes.
Why people still read it
It is considered a central text in ethics, and it lays the ground for the moral ideas Kant later developed in the Critique of Practical Reason.

Written with the help of AI from Open Library and todostuslibros, without giving away the ending, and reviewed by a person.

Second-hand offers

Free from your library: it may be on eBiblio, the ebook lending service of Spain's public libraries. Look for it on eBiblio ↗
Already on your Kindle or Kobo? Pecia Sync adds it to your library.

Total priceConditionBookshopView
€13.48free shippingVery goodCheapestReciclibrosView ↗
€15.15free shippingLike newHamelynView ↗
€20.31free shippingGoodanother editionHamelynView ↗
€25.32€13.55 + €11.77 shippingAcceptableBetter World Books LtdView ↗
€99.00free shippingGoodanother editionWorld Wide BooksView ↗

Sorted by total price, shipping included, on Iberlibro. Links carry no affiliate code; if they ever do, it will say so here, and it will never change the order.

Video reviews

What people say about the book on YouTube, in Spanish.

We haven't picked videos for this book yet

We look for reviews in Spanish and bring them here, so you don't have to leave the page. Meanwhile, you can search for them yourself.

Search reviews on YouTube ↗

Reader reviews

From people who have it on their Pecia shelf.

No reviews yet

Reviews arrive with accounts: once you've read it, you'll be able to rate it and say what you thought from your shelf.

Tell me when it opens

Why we only look at used copies

In Spain, Law 10/2007 fixes the price of new books: the publisher sets it and shops can only take 5% off. Amazon, FNAC and your local bookshop all cost the same. The only place the price moves is second-hand.

More in Philosophy and religion