"海は人がけっして孤独を感じない広大な砂漠だというのは四方八方に命の蠢きを感じるからだ"

Simplified Meaning:

Imagine you are standing on a beach, looking out at the ocean. Even though the sea might seem vast and empty, especially to someone who doesn't know how deep or full it is, it's actually full of life. There are fish swimming, plants growing underwater, and all kinds of creatures living there. You might feel alone at first because you can't see everything in the water, but knowing that there's so much activity going on below the surface can make you feel connected to life. Think about when you are in a big, busy city. At first, it might feel overwhelming and you might feel lonely because you don't know anyone. But then you start noticing people around you – talking, working, playing – and you realize that you are surrounded by life. You aren't really alone because there's so much happening around you. In the same way, life is everywhere, even in places that seem empty. This idea can be comforting if you ever feel lonely. It reminds you to look deeper and be aware of the life and energy surrounding you.