10 Reasons why I don't swear

1. It pleases mother so much.
2. It is a fine mark of manliness.
3. It proves I have self control.
4. It indicates how clearly my mind operates.
5. It makes my conversation so pleasing to everybody.
6. It leaves no doubt in anyone's mind as to my good breeding.
7. It impresses people that I have more than ordinary education.
8. It is an unmistakable sign of culture and refinement.
9. It makes a very diserable personality among women and children and in all respectable society.
10. It is my way of honoring God who said: 'Thou shalt not take the Name of the Lord thy God in vain'.
    

(The Johnson Print Shop - London - quoted here)