On the Improvement of Understanding (Part of Unabridged Start Publishing LLC) Benedict de Spinoza eBook £0.99
An Enquiry Concerning Human Understanding (Part of Unabridged Start Publishing LLC) David Hume eBook £1.99
Collected Essays of Arthur Schopenhauer (Part of Unabridged Start Publishing LLC) Arthur Schopenhauer eBook £1.99
Tractatus Logico Philosophicus (Part of Unabridged Start Publishing LLC) Ludwig Wittenstein eBook £0.99