"We have no knowledge, that is, no general principles drawn from the contemplation of particular facts, but what has been built up by pleasure, and exists in us by pleasure alone. The Man of Science, the Chemist and Mathematician, whatever difficulties and disgusts they may have had to struggle with, know and feel this. However painful may be the objects with which the Anatomist's knowledge is connected, he feels that his knowledge is pleasure; and where he has no pleasure he has no knowledge."

Source: Samuel Taylor Coleridge, William Wordsworth (2015). “Lyrical Ballads and other Poems by Samuel Taylor Coleridge and William Wordsworth (Including Their Thoughts On Poetry Principles and Secrets): Collections of Poetry which marked the beginning of the English Romantic movement in literature, including poems The Rime of the Ancient Mariner, The Dungeon, The Nightingale, Dejection: An Ode”, p.211, e-artnow