First time I ever took acid and got really high, as I was walking around I thought "Gee. The world looked like this when I was a little kid." I remember seeing the sparkling reality and three-dimensionality of things. Sort of like a renewal, every time you do it is a renewal, it is a renewal. It keeps your head young. It lets you keep that being able to accept the new thing just as easily as a kid would. Most people get all this stuff in their head like an old library, no room for the new volume to go on the shelves.