The constructive intellect [genius] produces thoughts, sentences, poems, plans, designs, systems. It is the generation of the mind, the marriage of thought with nature.
To the body and mind which have been cramped by noxious work or company, nature is medicinal and restores their tone. The tradesman, the attorney comes out of the din and craft of the street and sees the sky and the woods, and is a man again. In their eternal calm, he finds himself.
A man known to us only as a celebrity in politics or in trade, gains largely in our esteem if we discover that he has some intellectual taste or skill.
Tobacco, coffee, alcohol, hashish, prussic acid, strychnine, are weak dilutions; the surest poison is time. This cup which nature puts to our lips, has a wonderful virtue, surpassing that of any other draught. It opens the senses, adds power, fills us with exalted dreams, which we call hope, love, ambition, science; especially it creates a craving for larger draughts of itself.
By his machines man can dive and remain under water like a shark; can fly like a hawk in the air; can see atoms like a gnat; can see the system of the universe of Uriel, the angel of the sun; can carry whatever loads a ton of coal can lift; can knock down cities with his fist of gunpowder; can recover the history of his race by the medals which the deluge, and every creature, civil or savage or brute, has involuntarily dropped of its existence; and divine the future possibility of the planet and its inhabitants by his perception of laws of nature.