Final answer:
Aristotle disagreed with Plato on the theory of forms, emphasizing the importance of observable particulars over abstract forms, and on the reliability of senses, highlighting their role in understanding the world.
Step-by-step explanation:
Aristotle, a student of Plato, had significant disagreements with his teacher on philosophical doctrines. One major disagreement was concerning the theory of forms. Aristotle argued that if forms did exist, it was unclear how these immaterial entities could influence material things and cause change. Plato's theory posited that forms like beauty existed in a separate, transcendental realm and caused the beauty seen in flowers or faces. Aristotle challenged this idea, asserting that without beautiful things, like flowers and faces, there could be no concept of beauty. This emphasis on the 'particulars' signifies a shift from Plato's abstract forms to Aristotle's observable realities.
Another area of disagreement was concerning the reliability of the senses and the nature of understanding the world. While Plato distrusted the senses for true understanding, Aristotle believed in the value of empirical observation and reasoned study, arguing that the senses, though imperfect, provide genuine insights into how the world works.