The professor was the only one who thought it incumbent to scold them for a silly prank and to point out the serious danger in which they had been involved.
"The Mermaid of Druid Lake and Other Stories"
Charles Weathers Bump
And pondering more and more strongly upon the situation he, in the end, came to the conclusion that even if that was Smain's division, it was incumbent for him to go.
"In Desert and Wilderness"
Henryk Sienkiewicz
In proportion, however, as the European and American population increased, it became more and more incumbent upon the Eurekans, to watch over their own personal safety.
"A Lady's Captivity among Chinese Pirates in the Chinese Seas"
Fanny Loviot