Answer:
John Locke is expressing the ideas of empiricism.
Step-by-step explanation:
Empiricism is the philosphical theory that states that all knowledge comes from human experience: from the information that a person obtains through his senses. Empiricism is contrary to other theories like idealism, or rationalism.
Jonh Locke was a very important empiricist, and he is in fact considered the founder of the British empiricist school. In the paragraph, Locke is saying that he believes all knowledge comes from human experience, because when a person is born, his mind is a blank, and can only be filled through sensorial information.