1. When the horizon draws near because of rain and mist, it is a fine thing to sit in an armchair near an upstairs window with some work to do
2. Watching a curled paper strip whirled over a cliff edge, and seeing it rising and falling as the wind pleases for a satisfyingly long time, until it falls into the sea.
3. To stand on the top of a hill -- near a trig point -- and to feel the wind against my back.