Philosophy
The Nature of Aesthetic Judgment and the Antinomy of Taste
Quick fact
Kant wrote that in matters of taste, we 'necessarily' expect others to agree, even though we can never prove our judgment with concepts or evidence.
Why this is interesting
You say a painting is beautiful, and your friend disagrees. You both feel strongly—yet neither of you can prove you're right. So why does it feel like the other person is wrong?