Alexander von Humboldt

While we maintain the unity of the human species, we at the same time repel the depressing assumption of superior and inferior races of men. There are nations more susceptible of cultivation, more highly civilized, more ennobled by mental cultivation than others__ut none in themselves nobler than others.

The philosophical study of nature endeavors, in the the vicissitudes of phenomena, to connect the present with the past.

The most dangerous worldview is the worldview of those have not viewed the world.

This aspect of animated nature, in which man is nothing, has something in it strange and sad....Here, in a fertile country, adorned with eternal verdure, we seek in vain the traces of the power of man; we seem to be transported into a world different from that which gave us birth.

Nature can be so soothing to the tormented mind

I could not possibly have been placed in circumstances more highly favorable for study and exploration than those which I now enjoy. I am free from the distractions constantly arising in civilized life from social claims. Nature offers unceasingly the most novel and fascinating objects for learning. The only drawbacks to this solitude are the want of information on the progress of scientific discovery in Europe and the lack of all the advantages arising from an interchange of ideas.