<P> Evolutionary ethics is not the only way to involve nature with ethics . For example, there are ethically realist theories like ethical naturalism . Related to ethical naturalism is also the idea that ethics are best explored, not just using the lens of philosophy, but science as well (a science of morality). </P> <P> Thiruvalluvar, an Indian poet - philosopher of the pre-Christian era and the author of the Kural, a non-denominational work on secular ethics and morality, is believed to have lived around 5th and 2nd centuries BCE . While others of his time chiefly focused on the praise of God, culture and the ruler of the land, Valluvar focused on the moral behaviors of the common individual . Valluvar limits his theistic teachings to the introductory chapter of the Kural text, the "Praise of God ." Throughout the text thereafter, he focuses on the everyday moral behaviors of an individual, thus making the text a secular one . Even in the introductory chapter, he refrains from mentioning the name of any particular god but only addresses God in generic terms as "the Creator," "the truly Wise One," "the One of eight-fold excellence," and so forth . Translated into about 80 world languages, the Kural text remains one of the most widely translated non-religious works in the world . Praised as "the Universal Veda," it emphasizes on the ethical edifices of non-violence, vegetarianism, casteless human brotherhood, absence of desires, path of righteousness and truth, and so forth, besides covering a wide range of subjects such as moral codes of rulers, friendship, agriculture, knowledge and wisdom, sobriety, love, and domestic life . </P> <P> George Jacob Holyoake's 1896 publication English Secularism defines secularism thus: </P> <P> "Secularism is a code of duty pertaining to this life, founded on considerations purely human, and intended mainly for those who find theology indefinite or inadequate, unreliable or unbelievable . Its essential principles are three: (1) The improvement of this life by material means . (2) That science is the available Providence of man . (3) That it is good to do good . Whether there be other good or not, the good of the present life is good, and it is good to seek that good ." </P>

Which of the following is an ethical rule that can be drawn from the law