A thing of beauty is a joy forever: its loveliness increases; it will never pass into nothingness. 
'Beauty is truth, truth beauty,' - that is all ye know on earth, and all ye need to know.
Do you not see how necessary a world of pains and troubles is to school an intelligence and make it a soul?
He ne'er is crowned with immortality Who fears to follow where airy voices lead.
Heard melodies are sweet, but those unheard are sweeter.
Here lies one whose name was writ in water.
I am certain of nothing but the holiness of the heart's affections, and the truth of imagination.
I am in that temper that if I were under water I would scarcely kick to come to the top.
I have been astonished that men could die martyrs for religion - I have shuddered at it. I shudder no more - I could be martyred for my religion - Love is my religion - I could die for that.
I have two luxuries to brood over in my walks, your loveliness and the hour of my death. O that I could have possession of them both in the same minute.