I've watched you now a full half-hour; Self-poised upon that yellow flower And, little Butterfly! Indeed I know not if you sleep or feed. How motionless! - not frozen seas More motionless! and then What joy awaits you, when the breeze Hath found you out among the trees, And calls you forth again!
William WordsworthWe 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.
William WordsworthThe human mind is capable of excitement without the application of gross and violent stimulants; and he must have a very faint perception of its beauty and dignity who does not know this.
William Wordsworth