There's something about a roller coaster that triggers strong feelings, maybe because most of us associate them with childhood. They're inherently cinematic; the very shape of a coaster, all hills and valleys and sickening helices, evokes a human emotional response.
Regard your soldiers as your children, and they will follow you into the deepest valleys; look on them as your own beloved sons, and they will stand by you even unto death.
Athletes are sort of part of the community at large. They have to be dedicated to what they do, and go through lots of peaks and valleys. And there's a lot of training that goes into their careers. It's a struggle. Very dramatic.
Life has evolved to thrive in environments that are extreme only by our limited human standards: in the boiling battery acid of Yellowstone hot springs, in the cracks of permanent ice sheets, in the cooling waters of nuclear reactors, miles beneath the Earth's crust, in pure salt crystals, and inside the rocks of the dry valleys of Antarctica.
Transformation is a process, and as life happens there are tons of ups and downs. It's a journey of discovery - there are moments on mountaintops and moments in deep valleys of despair.
You have to go through those mountains and valleys - because that's what life is: soul growth.
Everyone messes up in relationships and has peaks and valleys in their personal lives. When I realized it wasn't the end of the world and I would keep on standing, I knew it was going to be OK.
A black hole really is an object with very rich structure, just like Earth has a rich structure of mountains, valleys, oceans, and so forth. Its warped space whirls around the central singularity like air in a tornado.
Life has all sorts of hills and valleys, and sometimes you don't end up doing what you had your heart set out on, but sometimes that's even better!
There are going to be peaks and valleys in everything - in your marriage, in your job, in your life. So just enjoy the peaks and ride out the valleys. Just try not to do anything too rash.