John Stuart Mill 
A System of Logic [EPUB ebook] 

A System of Logic, Ratiocinative and Inductive: being a connected view of the principles of evidence and the methods of scientific investigation Mill's Logic, first published in 1843, firmly established Mill as the leader of the empirical school of logic. A System of Logic is the first major installment of his comprehensive restatement of an empiricist and utilitarian position. It begins the attack on "intuitionism" which Mill carried on throughout his life, and makes plain his belief that social planning and political action should rely primarily on scientific knowledge, not on authority, custom, revelation, or prescription.