Are there certain aspects of the world and nature that man should not tamper with? What is at least one line, scientific or otherwise, that mankind should not cross?

the third paragraph is your answer,

"but, in a larger sense, we can not dedicate — we can not consecrate — we can not hallow — this ground. the brave men, living and dead, who struggled here, have consecrated it, far above our poor power to add or detract. the world will little note, nor long remember what we say here, but it can never forget what they did here. it is for us the living, rather, to be dedicated here to the unfinished work which they who fought here have thus far so nobly advanced. it is rather for us to be here dedicated to the great task remaining before us— that from these honored dead we take increased devotion to that cause for which they gave the last full measure of devotion—that we here highly resolve that these dead shall not have died in vain—that this nation, under god, shall have a new birth of freedom—and that government of the people, by the people, for the people, shall not perish from the earth. "

bearing in mind that painting during the 1700s was a medium used by the artists at courts in order to depict the kings or queens' portraits as well as their power and influence, the painting of king louis xiv as shown in sugar changed the world supports this claim. in this painting it is possible to observe three examples of wealth, power, and influence.

the king is wearing elaborate clothing made of fancy materials.

the king has a sword and sits next to a helmet.

the king sits next to a crown, which symbolizes his power.

wearing expensive clothes, carrying a sword and posing next to a crown are symbols of wealth, power and influence which clearly represent the importance of monarchy during those times.

poe’s time at the academy was financed by his foster father, john, meaning that poe needed his foster father’s permission in order to drop out if he wanted to. unfortunately, poe’s relationship with his foster father was soon on the rocks again after john married his second wife, louisa patterson.

i was just learning about this in language arts a week ago. edgar poe makes lots of wonderful books, too.