Link to the OED definitions of aesthetics, the sublime (B.n., 1.a, b, c), the beautiful (A.2. B.n.2), and the picturesque

From Longinus, “On the Sublime,” 1743 translation by William Smith

“. . . the sublime is a certain eminence or perfetion of language, that the greatest writers, both in verse and prose, have by this alone obtained the prize of glory, and filled all time with their renown. For the sublime not only persuades, but even throws an audience into transport. The marvelous always works with more surprising force, than that which barely persuades or delights. In most cases it is wholly in our power, either to resist or yield to persuasion. But the sublime, endued with strength irresistible, strikes home, and triumphs over every hearer . . . the sublime, when seasonably addressed, with the rapid force of lightning has borne down all before it, and shown at one stroke the compacted might of
genius . . .” (BABL 280-82)

The National Trust: what is the picturesque?

The National Trust and Harvey Repton and The Sheringham Commission