I don't really get the water one and fire. But my interputation of it is...
Water is like people who get in your way. Or things that get in your way. Fire is what makes you mad or triggered.
Firstly, Shining morning face means the children's face after washing their face at morning. And secondly, creeping like snail means the children's who can not move and unwilling to go to school. Just like snail...
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Answer:
It's because he sees the future as not as tragic as his past.
Explanation: