John Ruskin, from The Crown of Wild Olive (1866):
All good architecture is the expression of national life and character; and it is produced by a prevalent and eager national taste, or desire for beauty. And I want you to think a little of the deep significance of this word 'taste;' for no statement of mine has been more earnestly or oftener controverted than that good taste is essentially a moral quality. ‘No,’ say many of my antagonists, ‘taste is one thing, morality is another. Tell us what is pretty; we shall be glad to know that; but preach no sermons to us.’
Permit me, therefore, to fortify this old dogma of mine somewhat. Taste is not only a part and an index of morality — it is the ONLY morality. The first, and last, and closest trial question to any living creature is, ‘What do you like?’ Tell me what you like, and I'll tell you what you are.