1.) What ideas did John Locke write about in his book An Essay Concerning Human

Understanding?

John Locke devoted much of his time in writing philosophy and political thoughts and ideologies. He insisted that human mind is a blank slate which gains knowledge from the information provided by the five senses.

Explanation:

he puts firth that simple ideas are created from the experiences and complex ideas created in mind which converts the simple ideas into complex. he also states that primary qualities of an object is fixed and does not subject to change whereas the secondary qualities are subjected to change because it depends largely on one's perception

In his book an essay concerning human understanding he states that there exist some ideas which are innate and are accompanied from the birth. Therefore such innate ideas can be understood as universal truths. He says that such innate ideas cannot be obtained from experience or perception and such innate ideas are set by the supreme creator.