From the 17th through 19th centuries, the merging of folk beliefs about group differences with scientific explanations of those differences produced what Smedley has called an " ideology of race".  According to this ideology, races are primordial, natural, enduring and distinct. It was further argued that some groups may be the result of mixture between formerly distinct populations, but that careful study could distinguish the ancestral races that had combined to produce admixed groups.  Subsequent influential classifications by Georges Buffon , Petrus Camper and Christoph Meiners all classified "Negros" as inferior to Europeans.  In the United States the racial theories of Thomas Jefferson were influential. He saw Africans as inferior to Whites especially in regards to their intellect, and imbued with unnatural sexual appetites, but described Native Americans as equals to whites. 
The burning issues like quality of environment, disruption of earth’s natural ecosystem, environmental degradation and pollution, ecological imbalances, depletion of resources etc. can be approached and solved only after considering the value judgments which may be determined by taking into account the consequences of ‘environmental improvement programme’ on the entire society and society’s response towards the improvement programme. Actually all these depend on the interest and desire of the society in improving the quality of environment.
Locke attacks both the view that we have any innate principles (for example, the whole is greater than the part, do unto others as you would have done unto you, etc.) as well as the view that there are any innate singular ideas (for example, God, identity, substance, and so forth). The main thrust of Locke’s argument lies in pointing out that none of the mental content alleged to be innate is universally shared by all humans. He notes that children and the mentally disabled, for example, do not have in their minds an allegedly innate complex thought like “equals taken from equals leave equals”. He also uses evidence from travel literature to point out that many non-Europeans deny what were taken to be innate moral maxims and that some groups even lack the idea of a God. Locke takes the fact that not all humans have these ideas as evidence that they were not implanted by God in humans minds, and that they are therefore acquired rather than innate.