Plato

Plato (427–347 BCE) was an ancient Greek philosopher. He was a student of Socrates and the teacher of Aristotle. Plato's philosophy covered various subjects, including metaphysics, ethics, politics, epistemology, and aesthetics.

Plato emphasized the importance of reason and rationality as the means to discover truth and gain knowledge. He advocated for the cultivation of the mind and the pursuit of intellectual pursuits as a means to elevate the soul and achieve enlightenment. 

One of Plato's most famous works is "The Republic," in which he outlined his vision of an ideal society governed by philosopher-kings. He argued for the importance of justice, wisdom, and the pursuit of the greater good in both individuals and societies.