Baldassare Castiglione
Italy
15th and 16 centuries
Book of the Courtier
Embodies Italian humanism; applied the idea of the Renaissance or of the well-rounded man to the court realm
Niccolo Machiavelli
Italy
15th and 1th centuries
The Price
Most influencial writing on politics in history; "the ends justify the means"; called for rulers to be willing to sacrifice everything for their country
Sir Thomas More
England
15th and 16th centuries
Utopia
Formed the idea of a perfect society where all items were shared and all citizens were reasonable in thought
Desiderius Erasmus
The land to be known in the future as Holland
fifteenth and sixteenth centuries
Colloquies; Adages
Advocated for literacy and humanism; came up with various proverbs; advocated for Catholic reformation; "Erasmus laid the egg that Luther hatched"
Martin Luther
Germany
15th and 16th centuries
95 theses; Address to the Christian Nobility of the German Nation; The Babylonian Captivity of the Church
Spoke out against indulgences and Cahtolic corruption such as nepotism; "sola fide"; his ideas gave birth to Lutheranism and Protestantism
John Calvin
France
16th century
Institutions of the Christian Religion
Pioneering "pre-destination"; gave rise to the Genevan Church-State; followed Zwingli's idea of consubstantiation
Ignatius of Loyola
Italy
16th century
Spiritual Exercises
Created the Soviety of Jesus, or the Jesuits; gave rise to Catholic missionaries who would wage spiritual warfare against the oncoming tide of Protestantism
Theodore Beza
France
sixteenth century
On the Right of Magistrates over their Subjects
Supporter of Calvin and his teachings; believed that tyrannical rulers should be overthrown by their subservients
Philippe du Plessis Mornay
France
sixteenth century
Defense of Liberty Against Tyrants
Called for the king's underlings to rise up in the event of tyranny, an idea shared by Theodore Beza
That's all I've got so far and if any kind soul would like to add on, feel free as the sea to do so!