There are no famous sayings specifically related to food etiquette. Here are some famous sayings related to etiquette:

People who are rude are not born, things that are rude are not successful, and countries that are rude are restless. -Xunzi

On the surface, there are countless rules and regulations in etiquette, but its fundamental purpose is to make the world a place full of fun in life and make people approachable. -Millie Post

Politeness pleases polite people, and also pleases those who are treated with courtesy. -France Mendes

Politeness is the most important thing in life, which is more important than the highest wisdom and all knowledge. -herzen

Etiquette is to add a layer of decoration to all his other virtues, so that they can be useful to him and gain the respect and goodwill of all those close to him. -Locke

When the country is polite, the country will prosper; when the family is polite, the family will be big; when the body is polite, it will be self-study; when the heart is polite, it will be self-serving. -Yan yuan

a person with bad manners is like a house without windows. -Uygur proverb

In terms of beauty, the beauty of appearance is higher than the beauty of color, and the beauty of beautiful and elegant's proper movements is higher than the beauty of appearance. -Bacon

Moral character should be noble; Life should be frank; Behave, you should be polite. -Montesquieu

Being polite has nothing to lose, but everything to gain. -ma wo montague

in the education of cultivating a cultured person, there is a kind of training that is essential, that is, beautiful and elegant speech. -Eliot, former president of Harvard University

If you are rude, you will not live, if you are rude, you will not succeed, and if you are rude, you will not keep it. -Confucius

There is an inner politeness, which is associated with love: it will produce the most pleasant manners on the appearance of behavior. -Goethe

It is often quite accurate and reliable to understand people's inner world and grasp their true colors from their manners. -Leonardo da Vinci

Etiquette is a subtle thing, which is not only indispensable for people's communication, but also should not be taken too seriously. -bacon

one of the cheapest and most profitable substances in the world is etiquette. -Napoleon Hill.