The speaker enjoys spending time by the "deep sea" because he enjoys the way it connects with him.
It was common for protagonists in Romantic works of literature to spend a lot of time in nature and many exotic places on our planet, so as to run away from the society and their problems. They feel the pain of the world, and want to be free, and thus they go to nature to get rid of their issues.
Sometimes yes and sometimes no. It all depends on things like how much stress you are going through, how much work you have, and how late you must stay awake working at night. If you don't get enough sleep before the morning you may not be able to focus and get a quality education. Hope this helps. Good luck!
The author uses verbal irony to underline the striking contrast between human dignity and the fact that they are being exhibited and sold like cattle, or a commodity. When he/she says that "<span>men have learned the art of sinning expertly and genteelly, so as not to shock the eyes and sense of respectable society", the irony is that the sin doesn't seem to be a sin if it is polished and done in a way that the fine society considers acceptable. In other words, if you are selling humans, you'd better make sure they are nice and clean, or else someone might judge you. When talking about the "human property", the author uses words and expressions such as "</span><span>well fed, well cleaned, tended, and looked after, that it may come to sale sleek, and strong, and shining" - these expressions could well be used to describe a horse. The author purposefully conjures this resemblance, so as the reader would understand the treatment of the slaves. A visitor will be "</span><span>courteously entreated to call and examine, and shall find an abundance of husbands, wives, brothers, sisters, fathers, mothers, and young children" - everything is so well organized for the business to flourish, to the utmost satisfaction of both the customer and the seller. "An abundance" is another ironic expression that draws a parallel between people and cattle, or a merchandise.</span>
