This book is dedicated to investigate the possibilities of determining a kind of grounding of Ethics, since to talk about grounding is to talk about a kind of grounding, which ultimately aims at establishing what makes a certain thing what it is. Thus, from an ontological point of view, we would have a way to identify the 'grounding' of ethics, that is, we would have the possibility of saying something concrete and objective as a valid ethical judgment. To do so, I go through the theories of ethics, as well as points that could help us identify a valid moral judgment, or even establish a moral truth. Saying something about a truth in ethics leads us to more complicated scenarios, since we have to deal with the possibility of the existence of moral facts and what those facts would be. And in this scenario I invite all people, who wish to investigate more intensively the questions of Ethics, to accompany me on a philosophical journey.