Virgin Galactic goes deep on their vision with a full page and videos that describe what they want to achieve, their first steps, and why it matters. The content goes well beyond 300 words so we cannot include it. It's well worth reading and watching the videos. We do have the videos below.
The vision is titled "Our Vision for the Future". It is divided into two sections: "Why we go" and "Our vision".
It's well worth a visit to the Virgin Galactic site
Under "Why we go: Exploring Space Makes Life Better On Earth" this video is included along with explanation.
Photo credit: NASA