Nature considered rationally, that is to say, submitted to the process of thought, is a unity in diversity of phenomena; a harmony blending together all created things, however dissimilar in form and attributes; one great whole animated by the breath of life.
Rise above sectional interests and private ambitions... Pass from matter to spirit. Matter is diversity; spirit is light, life and unity.
The diversity of the phenomena of nature is so great, and the treasures hidden in the heavens so rich, precisely in order that the human mind shall never be lacking in fresh nourishment.