1670 non-fiction books

thumb|Second edition of Blaise Pascal's , 1670 The '''' (Thoughts'') is a collection of fragments written by the French 17th-century philosopher and mathematician Blaise Pascal. Pascal's religious conversion led him into a life of asceticism, and the was in many ways his life's work. It represented Pascal's defense of the Christian religion, and the concept of "Pascal's wager" stems from a portion of this work.

work by Baruch Spinoza