It is the duty of guru, it is the duty of father, it is the duty of the government, it is duty of the elderly relative to educate everyone. This is human life, not that simply eating like dog and dancing like dog. This is not human civilization: Revision history
Diff selection: Mark the radio buttons of the revisions to compare and hit enter or the button at the bottom.
Legend: (cur) = difference with latest revision, (prev) = difference with preceding revision, m = minor edit.