Mutual responsibilities are created for each member by the biological and psychological facts of our nature as sexual beings dependent upon one another. (religion-online.org)
This is one of the most fundamental facts of nature. (datingadvice.com)
The erosion of the soil in areas that have been abused for their mineral wealth, the pollution of the air where poor people live, are not just facts of nature; what we have is an ethical judgement on the exploitation of natural resources by the rich at the expense of the poor. (religion-online.org)