All acts of injustice that tend to shorten life; the spirit of hatred and revenge, or the indulgence of any passion that leads to injurious acts toward others, or causes us even to wish them harm (for "whosoever hateth his brother is a murderer"); a selfish neglect of caring for the needy or suffering; all self-indulgence or unnecessary deprivation or excessive labor that tends to injure health--all these are, to a greater or less degree, violations of the sixth commandment.