You must not know too much or be too precise or scientific about birds and trees and flowers and watercraft; a certain free-margin , or even vagueness - ignorance, credulity - helps your enjoyment of these things.
Niagara Falls is simply a vast unnecessary amount of water going over the wrong way and then falling over unnecessary cliffs...The wonder would be if the water did not fall.
When we have discovered a continent, or crossed a chain of mountains, it is only to find another ocean or another plain upon the further side. . . . O toiling hands of mortals! O wearied feet, travelling ye know not whither! Soon, soon, it seems to you, you must come forth on some conspicuous hilltop, and but a little way further, against the setting sun, descry the spires of El Dorado. Little do ye know your own blessedness; for to travel hopefully is a better thing than to arrive, and the true success is to labour.
Come, see the north-wind's masonry, Out of an unseen quarry evermore Furnished with tile, the fierce artificer Curves his white bastions with projected roof Round every windward stake, or tree, or door. Speeding, the myriad-handed, his wild work So fanciful, so savage, naught cares he For number or proportion.