Answer:
What has roots that nobody sees, and is taller than trees. Up, up it goes, and yet it never grows.
A horrid monster hides from the day, with many legs and many eyes. With silver chains it catches prey. And eats it all before it dies. Yet in every cottage does it stay. And every castle beneath the sky.
In this place, people lie, people cry, and people ask why. In this place, people sleep, people weep, and people's solitude, they keep. What is it?
A red drum which sounds without being touched, and grows silent, when it is touched.
I am the greatest teacher out of them all, but alas in the end I kill my pupils.
People take me on walks and I run and have fun. What am I?