Imago Mundi
``Picture of the World.'' --- or perhaps ``description.'' Not ``image'' in the sense of ``recent scandals have hurt the President's image among voters.''
Margarita Philosophica
``Philosophical Pearl'' --- though at the time ``philosophia'' included all secular learning, so ``Treasures of Learning'' might be a better rendering.
Friedrich Wilhelm Karl Heinrich Alexander von Humboldt (1769--1869), usually called Alexander von Humboldt, a Prussian naturalist who travelled for years through Central and South America, mapping and surveying, observing the local flora and fauna, recording the native customs, morals and antiquities. On his return to Europe he published his researches in several acclaimed volumes, and settled down to a life of fashionable intellect in Paris. There he published his Kosmos, a massive work which combined virtually all the scientific knowledge of the time with an impressively elevated literary style. It was, one might say, the A Brief History of Time or Chaos of the mid-nineteenth century. Despite incredible accomplishments and a vast reputation, his money eventually ran out and he was reduced to being a senior official in the Prussian government. As Dr. White himself says in Chapter 3,
On the 10th of May, 1859, Alexander von Humboldt was buried. His labours had been among the glories of the century, and his funeral was one of the most imposing that Berlin had ever seen. Among those who honoured themselves by their presence was the prince regent, afterward the Emperor William I; but of the clergy it was observed that none were present save the officiating clergyman and a few regarded as unorthodox.