Après cela, after all

3. laissez-vous faire, let them help you along, vous is the indirect object of faire, the direct object after laissez being understood.

4. je ne dis pas, i.e. " I do not say that you ought not to be on your guard"; trans., that would be different.

5. Mais si . . ., Oh yes, it is. Si affirms what has been just denied.