There was a feeling I had once, something which I've never been able to experience again, and it's left me longing for it ever since. It's hard to describe what that feeling is, but I'll try my best.
To begin, it has to be at night, and it has to be during the summer. The night how ever, can not be hot, and there must be a subtle wind blowing through, occasionally picking up. There has to be a tree, and the tree must have a branch which moves with the passing of the wind, in a way which is clearly visible.
There's also something with the location, and my perspective in front of me. Houses, in a row, all matching, with front yards, grass all finely trimmed, or at least looking nice. No noise, except for that of the wind. Humidity low, as if a storm were on the horizon. Clouds visible in the sky, illuminated by the moon, making them almost seemingly back-lit. They can be seen as they move across. Stars are there, but they can't be seen too well. Also, maybe not a body of water near by, but perhaps a sprinkler going off.
I experienced this once before. I have no idea how old I was, where I was, or where it even comes from to be exact. I'm constantly yearning for it. It's also very hard to describe what the feeling is, I think of it almost as if there was a perfect balance. Where every thing just flowed and sat evenly.