Nobody ever figures out what life is all about, and it doesn't matter. Explore the world. Nearly everything is really interesting if you go into it deeply enough.

This quote is saying that no one can ever figure out the true meaning of life, but it doesn’t matter. Instead, it’s better to take the time to explore the world and appreciate the things around us. The speaker suggests that when you take the time to look closer at things, you can find that nearly everything can be interesting if you take the time.