I've never understood why people consider youth a time of freedom and joy. It's probably because they have forgotten their own.
Every aspect of human technology has a dark side, including the bow and arrow.
Time is not a line but a dimension, like the dimensions of space.
We've learned to see the world in gasps.
It doesn't really matter what "genre" your book is. What matters is that it's a good book of its kind. Whatever that kind may be.
One of the gravestones in the cemetery near the earliest church has an anchor on it and an hourglass, and the words In Hope. In Hope. Why did they put that above a dead person? Was it the corpse hoping, or those still alive?