An agreeable melancholy

Nothing is so improving to the temper as the study of the beauties, either of poetry, eloquence, music, or painting. They give a certain elegance of sentiment to which the rest of mankind are strangers. The emotions which they excite are soft and tender. They draw off the mind from the hurry of business and interest; cherish reflection; dispose to tranquillity; and produce an agreeable melancholy, which, of all dispositions of the mind, is the best suited to love and friendship.

David Hume, Of the Delicacy of Taste and Passion

The imperfections of language

I am apt to imagine, that, were the imperfections of language, as the instrument of knowledge, more thoroughly weighed, a great many of the controversies that make such a noise in the world, would of themselves cease; and the way to knowledge, and perhaps peace too, lie a great deal opener than it does.

John Locke, An Essay Concerning Human Understanding