The Rev. Dr. Marlan Lavanhar gave a wonderful sermon on 08/26/18 entitled, Love and Evolution which is well worth watching. You can access it by clicking here.
Here is a snippet of how it starts with a definition of "reality." The fourth principle of Unitarian Univeralism is to affirm and promote the free and responsible search for truth and meaning. This is not post modern "truth," meaning that it can be whatever people in power says it is. "Truth" is based in reality. It is incumbent on us as a religious loving people to be in right relationship with reality.