Spinoza: Practical Philosophy by Gilles Deleuze

Written mostly in dictionary form to explain the terms and ideas, this book by Gilles Deleuze is a wildly helpful introduction to one of our most influential philosophers, Baruch Spinoza.

"Spinoza did not believe in hope or even in courage; he believed only in joy and in vision . . . he more than any other gave me the feeling of a gust of air from behind each time I read him, of a witch's broom that he makes one mount." - Deleuze