The raison d'etre of marriage is human happiness now and in the generations to follow.
The question was sufficiently important to demand an experimental solution; hence the raison d'etre of the present demonstration.
The discussion of this proposal seems to make plain the raison d'etre for the existence of the Sentinel.
Of course the raison d'etre of being here is the sulphur spring.
The raison d'etre therefore for the book is convenience and arrangement.
So my reader will perhaps understand the raison d'etre of the proverb, "The lawyers own England."
Moreover, we have the raison d'etre of the ghost: she had been a victim of the Chief Justice in Eyre.
"excuse for being," 1864, first recorded in letter of J.S. Mill, from French raison d'être, literally "rational grounds for existence."
A basic, essential purpose; a reason to exist: “Professor Naylor argues that in the nuclear age, infantry forces have lost their raison d'être.” From French, meaning “reason for being.”