A boy suddenly said to a girl, "There will be bread and milk." What does that mean?

A boy suddenly said to a girl, "There will be bread and milk", which means that our life will get better and better, and eventually we will have all material things.

"There will be bread, milk and everything", which means "milk and bread are daily necessities of foreign families. You don't have those material things now, but through a period of development, you will have material conditions through your own efforts for a period of time.

source

At that time, in the play, Vasily comforted his half-starved wife before going to the countryside to collect grain. Actually, I was going to collect potatoes. The wife took the only piece of bread at home. Quietly put it in Vasily's pocket. When Vasily hugged his wife goodbye, he secretly put the bread on the table, which made people feel very moved. He told his wife firmly, "There will be bread, milk and everything." "

This sentence expresses a mentality of not giving up hope. As long as you don't give up and abandon, everything will be fine, and everything you want will be there.