"When you realize how perfect everything is you will tilt your head back and laugh at the sky." - Buddha --- World is perfect, life is perfect and everything in there is perfect because they all were what God created for you whom he loves.
The hearth and the Salamander can also mean happiness and if Montag chose to be happy or not. The two things in his life his home and his work. Did it really make him happy. He chose happiness over this home and his work by reading the books.