"The aspect of external nature, as it presents itself in its generality to thoughtful contemplation, is that of unity in diversity, and of connection, resemblance and order, among created things most dissimilar in their form; — one fair harmonious whole. To seize this unity and this harmony, amid such an immense assemblage of objects and forces — to embrace alike the discoveries of the earliest ages and those of our own time — and to analyse the details of phenomena without sinking under their mass — are efforts of human reason, in the path wherein it is given to man to press towards the full comprehension of nature, to unveil a portion of her secrets, and, by the force of thought, to subject, so to speak, to his intellectual dominion, the rough materials which he collects by observation."
- Alexander von Humboldt (1769 - 1859)
Cosmos: A Sketch of the Physical Description of the Universe