This quote says that new thoughts, new ideas (especially the big ones) permanently change our minds. Our thought process is different, once we have a new idea with which to play. Our horizons of ‘possible’ have been moved, and there are now new spaces in which we can play.
As we hear new ideas, not only do we have new places to explore, our minds are often drawn there. To explore this new open space is almost an imperative. We may not always find this new space useful, but we still notice all that new space.
Like a baby’s first steps and first run, like an older child’s first ride on a bicycle without training wheels, or like a teenager’s first solo drive in the car, once we have experienced the expanding of our limits, life is different, and will never be the same.
Seeking out new ideas, or at least reacting to them when we come across them, is part of human nature. We are inquisitive (although some are more so than others) and seem to enjoy mastering new skills or ideas (at least while we are young – any idea why some people seem to grow out of it?).