The briefest sampling of his 21-volume long account of his five years in South America, these few pages give a good insight into a mind which ushered in the scientific age. Humboldt travelled extensively, commenting on geography and geology as well his main areas of expertise, which was botany. He also had insightful things to say about the societies that were emerging in the region, as the European settlers built their cities and extended their commercial activities more deeply into the hinterland. There are implicit criticisms of the slave system he encountered on his travels, both from the standpoint of its cruelty but also its effect in dominating economies that would have been more productive if freer forms of enterprise had more space to develop.
There is also a sophisticated understanding of what we would now call ecology in these writings. Here’s an example:
“By felling trees that cover the tops and sides of mountains men everywhere have ensured two calamities at the same time for the future; lack of fuel, and scarcity of water. Trees, by the nature of their perspiration, and the radiation from their leaves in a cloudless sky, surround themselves with an atmosphere that is constantly cool and misty. They affect the amount of springs by sheltering the soil from the sun’s direct actions and reducing the rainwater’s evaporation. When forests are destroyed, as they are everywhere in America by European planters, with imprudent haste, the springs dry up completely, or merely trickle.....”