Answer:
to show that the land has been covered by floodwaters
I would say that the use of Carpe diem in England during the Renaissance demonstrates the incorporation of Latin into English.
Renaissance was the time when ancient languages became very important, and as you may already know, even today's English is full of Latin words and expressions, such as carpe diem and others.
I think the answer would be: How great human beings are.
Sorry If I'm wrong