The only way to understand how nature works is to look at it and then use logic and reason to understand and explain what you see. Newton was one of the first to interrogate Nature using the principles of what we now call the ‘scientific method’. In other words he observed the world, came up with theories to explain what he saw, then tested them with experiments to see if he was right. The power of this approach is that it aims to remove preconceived ideas and in doing so deliver a more accurate description of the natural world. (Brian Cox)