Add to ORKGDo other earthly forms of life evolved to the level of intelligent life? Cancer and resistance to antibiotics obliged to ask this question. Signs of intelligence are found at its simplest levels. We try to see if logic is used at these levels. Peter of Spain’s suppositio materialis is applied to the chemical signals of cells. Dynamic Logic is used to understand these chemical communications. \u3cSystem of communications\u3e is used, instead of “language”. The development of life appears as the development of an axiomatic system. The rights of unborn humans and God’s rights over His own creation appear as the most powerful arguments for conservationis