The starting point for all advocates of natural law is to work out the purpose of human life. For Aquinas, this purpose included to live, to reproduce, to learn, to have an ordered society and to worship god. Reason is used to find out god’s intentions and the purpose of human existance and this will enable us to arrive at the principal of natural law.
Acts are intrinsically good or bad, when good acts are done , God’s purpose is glorified. Human beings may be led by apparent ‘goods’ that tempt them away from natural law. Both the intention and the act are important. To act in a good way fort the wrong reason is to perform a good exterior act buta bad interior act. For example to help an old lady cross the road (good exterior act) to impress someone ( bad inteior act) is wrong. It should be out of charity and not for the sake of admiraration of others.
We can distinguish, within natural law, primary and secondary precepts. The primary precepts will correspond to the order of natural in human beings. The most important being, "Do good and avoid evil," this will give rise to other primary precepts such as the natural inclination to self-preservation, to live in society, to avoid harm to others, and to know truths about the reality we live in and our own human nature. These primary precepts are unchangeable to the extent they concern the primary ends of the natural inclinations inherent in all human beings.
The primary precepts are very general in their formulation. The secondary precepts, on the other hand, are more particular or specific and are concerned with things to which we are not inclined so immediately. Among these are such precepts as those regarding do not Murder, do not abort unborn, defend the defenceless and do not commit suicide. Therefore we can see that Good acts are those that must be in accordance with the primary precepts and these good acts are called secondary precepts.
"The strict application of Natural Law goes against common sense". Discuss
Natural law teaches that everything in nature has a purpose and everything should work towards an ideal existence and fulfilling its purpose. Natural law is seen a universal approach to ethics that works in the same way for every nationality and at every time in history, that is independent of public opinion and does not change in different circumstances for any reason, therefore natural law is an absolute theory. It teaches to ‘do good and avoid evil’. Experiences that are not condoned by the natural law are frowned upon.
However, some people would argue that natural law goes against common sense.
Practical decision making abilities come from previous knowledge and from the consequences as result of actions. However natural law would lead us, never to have a chance to know what it is like to make a wrong decision and learn from the consequences and our mistakes. Common sense leads us to understand why things happen, and learn valuable lessons in life. Natural law takes away from people the ability to make practical decisions based on previous experience and specific circumstances. It goes against the idea that things can be right or wrong in different circumstances. Many societies around the world today accept murder or abortion as illegal; this however does make them wrong; sometimes they will make perfect sense.
An example whereby natural law goes against common sense is in the case of euthanasia. If you’re loved one is in pain and dying from a terminal illness, and they ask you to help them die. What would you do? Some people would argue that it is common sense that you would do as your loved one wish. As they have stood by you for the whole of your life and helped you in everyway possible, so should you do the same and in return help them to end there life, if they believe that is what they really want to. Surly you wouldn’t want your loved one to be in pain anymore than they have to be, and if the thing they want most is for you to help them to their life, then most people would see no problem with this, even though they would find it really hard. However natural law would argue that euthanasia is always wrong in every circumstance. As euthanasia is murder and natural law teaches that murder is always wrong. Also natural law argues that committing suicide is also always also wrong and goes against the purpose of life. Therefore natural law would say that in no circumstance is it ok to let or help loved one die, regardless of the state in which they are in. Therefore natural law goes against common sense, and common sense goes against natural law.
Some of the rules, in which Natural Law apply are unacceptable to common sense. For example human teeth include incisors, for nibbling vegetables, and canines, for eating meat; by the principles of Natural Law, this would mean that people therefore ought to eat meat as well as vegetables, and that choosing to be a vegetarian is morally wrong.
Also natural law claims that sexual intercourse is for the purpose of procreation only; therefore people who are infertile, perhaps because they have passed the menopause or because of some other condition, should not have sex with their wives or husbands.
On the other hand common sense can be seen as being a part of natural law. Our common sense would tell us that it is always wrong to murder or hurt another human being, out of spite or evil thoughts or that does not help the person in anyway. Natural law would also agree with this as it is always wrong to murder or hurt another human being, for your sake, for example revenge.