The meaning ascribed in popular usage to the word 'selfishness' is not merely wrong: it represents a devastating intellectual 'package-deal,' which is responsible, more than any other single factor, for the arrested moral development of mankind.
The object of basic education is the physical, intellectual and moral development of children through the medium of handicraft.
Many humanists have argued that happiness involves a combination of hedonism and creative moral development; that an exuberant life fuses excellence and enjoyment, meaning and enrichment, emotion and cognition.
The law is the witness and external deposit of our moral life. Its history is the history of the moral development of the race.
There is increasing social concern about our use of nonhumans for experiments, food, clothing and entertainment. This concern about animals reflects both our own moral development as a civilization and our recognition that the differences between humans and animals are, for the most part, differences of degree and not of kind.
For every step in spiritual perception, three steps are to be taken in moral development.