I consulted several things in my situation which I found would be proper for me: 1st, health and fresh water I just now mentioned; 2ndly, shelter from the heat of the sun; 3rdly, security from ravenous creatures, whether men or beasts; 4thly, a view to the sea, that if God sent any ship in sight, I might not lose any advantage for my deliverance, of which I was not willing to banish all my expectation yet.
Questions:
A. Identify the author and the work.
B. What idea does the quoted passage express
浅覆盖的原因（）