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.
That though the radiance which was once so bright be now forever taken from my sight. Though nothing can bring back the hour of splendor in the grass, glory in the flower. We will grieve not, rather find strength in what remains behind.