Jacob Needleman Books

An Unknown World

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What is the purpose of life on Earth? Philosopher Jacob Needleman frames man's role on the planet in a completely new and fresh way, moving beyond the usual environmental concerns to reveal how the...

Why Can't We Be Good?

By Jacob Needleman

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The widely respected social philosopher embarks on his most gripping and broadly appealing work, asking the ultimate question of human nature: Why do we repeatedly violate our most deeply held valu...

How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.