The correct answers to these open questions are the following,
For Kant, the supreme principle of morality is Good Will. To explain this concept in simple terms, we can say that Good Will is the moral duty of an individual. It has to ever do what is right, regardless of the consequences. For Kant, the morality of individual actions is determined for its commitment to always do good. To do that the individual has to be guided by the use of reason, the logic. The reason is what is going to motivate the Good Will of an individual.
Some authors have objected to Kant's concept using the argument of the emotions as an important component in the way people act and are influenced. This objection is difficult to overcome in that it is true that emotions play a big role in how people think, act, and react to the common things of life.