For if in any manner we can stimulate this instinct, new passages are opened for us into nature, the mind flows into and through things hardest and highest, and the metamorphosis is possible

To the dull mind nature is leaden. To the illumined mind the whole world burns and sparkles with light.

Trust the instinct to the end, though you can render no reason

As the traveler who has lost his way, throws his reins on his horse's neck, and trusts to the instinct of the animal to find his road, so must we do with the divine animal who carries us through this world

Nature is the incarnation of thought. The world is the mind precipitated.

Nature never wears a mean appearance. When we speak of nature in this manner, we have a distinct but most poetical sense of mind.