Who said “The pleasure that is in sorrow is sweeter than the pleasure of pleasure itself.”?

“Where there is sorrow there is holy ground.”

“The path of sorrow, and that path alone, Leads to the land where sorrow is unknown.”

“Since my earliest childhood a barb of sorrow has lodged in my heart. As long as it stays I am ironic -- if it is pulled out I shall die.”

“There is no wisdom in useless and hopeless sorrow, but there is something in it so like virtue, that he who is wholly without it cannot be loved.”

“...some say that Happiness is not Good for Mortals & they ought to be answerd that Sorrow is not fit for Immortals & is utterly useless to any one a blight never does good to a tree & if a blight kill not a tree but it still bear fruit let none say that the fruit was in consequence of the blight.”

“O, wind, if winter comes, can spring be far behind?”

“How wonderful is death! Death and his brother sleep.”

“Poets are the unacknowledged legislators of the world.”

“Our sweetest songs are those that tell of saddest thought.”

“The gigantic shadows which futurity casts upon the present.”

“Revenge is the naked idol of the worship of a semi-barbarous age.”