Requirements Engineering ...

“Requirements engineering is primarily a communication,
not technical, activity.” 
[Karl Weigers, 2000]

"The most difficult part of requirements gathering is not the act
of recording what the users want; it is the exploratory, developmental
activity of helping users figure out what they want."
[Steve McConnell, 1997]

“Requirements management is a means to an end;
it is not a goal.”
[Alan Davis, 2005]