https://www.infoq.com/presentations/Simple-Made-Easy/ by Rich Hickey
Simple means only one fold/purpose/braid (not entangled). The opposite is complex.
Easy means that something is near, for example near our conception/knowledge/comprehension. Easy is relative to a person, for example some people will find German easy to learn but whether German is simple to learn is different. The opposite is "hard".
You need to bring the complexity to you by simplifying rather than going to the complexity.