Of all the great modern philosophers, Spinoza is probably the most interesting in relation to human life, and is certainly the most lovable and high-minded. Unfortunately, the difficulty and crabbedness of his writing make it very hard for people who are not serious students of philosophy to understand even what is not inherently difficult in his doctrines. He therefore requires commentaries to translate him into easier language, if his main ideas are to be appreciated as widely as possible. [...] Spinoza's philosophy, however, whether we agree with it or not, remains one of the noblest monuments of human genius, and whoever makes it more widely accessible is doing a useful work. To readers unacquainted with philosophy, Mr. Picton's book may therefore be confidently recommended.