These messages take on added importance ahead of Copenhagen, where negotiators will meet in December this year to shape an international response to climate change.
Michel Barnier, the European Commission's Brexit negotiator, has said flatly that after Brexit 100% of imports of animals and animal products from Britain will be subject to border controls.
Stanford professor Jeffrey Pfeffer, persuasion expert Robert Cialdini and many others have all recommended asking for advice as a powerful way to influence others and warm them to you.