Salad days
(重定向自Salad years)

"Salad days" is a Shakespearean idiomatic expression to refer to a youthful time, accompanied by the inexperience, enthusiasm, idealism, innocence, or indiscretion that one associates with a young person. A more modern use, especially in the United States, refers to a heyday, a period when somebody was at the peak of their abilities—not necessarily in that person's youth.