(verb) To conduct (oneself) well, or in a given way. Example: "You need to behave yourself, young lady."
"The basis of optimism is sheer terror."
"Sometimes we behave as though there was something more important than life. But what?"
"One must give value to their existence by behaving as if ones very existence were a work of art."
"The difference between a lady and a flower girl is not how she behaves, but how she’s treated."
"To keep our faces toward change, and behave like free spirits in the presence of fate, is strength undefeatable."