This lecture is about a search for fundamental ideas that form the basis of reasoning and action. In the existing scientific paradigm, the correct way of saying this would be that the lecture is about fundamental principles, given that a typical definition of principle is "a fundamental truth or law as the basis of reasoning or action". Yet, reasoning and actions of people do not blindly follow strict principles and can be unpredictable. There is a difference between fundamental ideas, that is concepts, and absolute truths or laws. The thinking presented in this lecture is based on somewhat flexible concepts rather than on absolute principles.