Our weekly Sunday Gathering is a chance to meet other New Unity members, to be uplifted by the message, to share joys and sorrows, to feel togetherness. So how much do we know? How much of nature is really understood and what still remains a mystery to us? I will discuss particle physics to illustrate the success and limitations of human discovery. In the process, I will share how the process of doing scientific research impacted me personally. In the chapel at Newington Green, 39A Newington Green.