When a man is trying to sell you something, don't imagine he is that polite all the time.
The way to keep a cat is to try to chase it away.
People are always neglecting something they can do in trying to do something they can't do.
I try to have no plans the failure of which would greatly annoy me. Half the unhappiness in the world is due to the failure of plans which were never reasonable, and often impossible.
When a man is trying to sell you something, don't imagine that he is polite all the time.