And i want to say something to the schoolchildren of america who were watching the live coverage of the shuttle’s take-off. i know it is hard to understand, but sometimes painful things like this happen. it’s all part of the process of exploration and discovery. it’s all part of taking a chance and expanding man’s horizons. the future doesn’t belong to the fainthearted; it belongs to the brave. —address on the space shuttle challenger, ronald reagan overall, i find president reagan’s word choice to be .