Hugo Grotius is a famous Dutch lawyer and statesman, philosopher, playwright and poet. He laid the foundations of international law of the New Age, developing a political and legal doctrine based on a new methodology, which contains original solutions to a number of problems in the general theory of law and state, as well as radical program provisions for that time. In the key work of Grotius - the treatise “On the Law of War and of the World,” published in 1625 in France and dedicated to Louis XIII, a system of principles of natural law, law of peoples and public law was developed and formulated. When writing it, the Dutch scientist pursued the following goals - to solve pressing problems of international law and to prove that during war the voice of the law should not be drowned out by the roar of weapons. Hugo Grotius lived during the Eighty Years' War between the Netherlands and Spain and the Thirty Years' War between Catholics and Protestants in Europe; he condemned aggressive, aggressive wars and believed that such conflicts should be waged only for the sake of making peace and obey the principles of natural law - this author’s attitude formed the basis for the basis of the treatise “On the Law of War and Peace”. The publishing layout of the book is saved in PDF A4 format.