Complex sentence: In all his work, John Olmsted retained a sensitivity to the natural beauty of the site, including its views, vistas, and greenways, and an awareness that communities and public areas must be comfortable and inviting.
Split into simpler sentences: In all his work, John Olmsted retained a sensitivity to the natural beauty of the site, including its views, vistas, and greenways. He wanted to ensure that communities and public areas must be comfortable and inviting.