The average person is more interested in their own name than in all the other names in the world put together. — Dale Carnegie

A drop of honey can catch more flies than a gallon of gall.

Looking at the other person’s point of view and arousing in him an eager want for something is not to be construed as manipulating that person so that he will do something that is only for your benefit and his detriment. Each party should gain from the negotiation.

Abilities wither under criticism, they blossom under encouragement.