During the first half of the present century we had an Alexander von Humboldt, who was able to scan the scientific knowledge of his time in its details, and to bring it within one vast...

Every scientist is a descendant of Humboldt. We are all his family.

Columbus gave Europe a New World; [Alexander von] Humboldt made it known in its physical, material, intellectual, and moral aspects.

[Alexander von] Humboldt showers us with true treasures.

The real discoverer of South America was [Alexander von] Humboldt, since his work was more useful for our people than the work of all conquerors.

If the people of Europe had known as much of astronomy and geology when the bible was introduced among them, as they do now, there never could have been one believer in the doctrine of...

He [Alexander von Humboldt] was to science what Shakespeare was to the drama.

As a rule, theologians know nothing of this world, and far less of the next; but they have the power of stating the most absurd propositions with faces solemn as stupidity touched by fear.It is...

[Alexander von Humboldt was the] greatest scientific traveller who ever lived.

History, I believe, furnishes no example of a priest-ridden people maintaining a free civil government. This marks the lowest grade of ignorance of which their civil as well as religious leaders will always avail themselves...