The period of 1936 to 1941 was the most creative periods in his life and career.
The creative period in sociology was a long time ago.
It was the single most creative period in modern Chinese history.
The show's tour de force comes from Russia's most creative period - the early 19th century.
The last two years alone have been a particularly creative period.
"It was the most interesting and creative period of my life."
These "modern" pieces mark the end of his middle creative period.
This is before the account goes on to discuss the creative periods.
The writers' time there became a productive, creative period for many of them.
Thus the second significant creative period of the theatre ended after only three seasons.