All the facts of nature are nouns of the intellect, and make the grammar of the eternal language. Every word has a double, trebleor centuple use and meaning.

Ideas must work through the brains and the arms of good and brave men or they are no better than dreams.

Nature arms each man with some faculty which enables him to do easily some feat impossible to any other.

The world - this shadow of the soul, or other me - lies wide around. Its attractions are the keys which unlock my thoughts and make me acquainted with myself. I run eagerly into this resounding tumult... So much only of life as I know by experience... The true scholar grudges every opportunity of action past by, as a loss of power.

And, in fine, the ancient precept, "Know thyself," and the modern precept, "Study nature," become at last one maxim.

Be an opener of doors

The walking of Man is falling forwards.