A categorical imperative would be one which represented an action as objectively necessary in itself, without reference to any other purpose.
Immanuel Kant

Adapt or perish, now as ever, is nature's inexorable imperative.
H. G. Wells

After the end of the Second World War it was a categorical imperative for us to declare that we renounced war forever in a central article of the new Constitution.
Kenzaburo Oe

As our country increasingly relies on electronic information storage and communication, it is imperative that our Government amend our information security laws accordingly.
Jo Ann Davis

As we continue to fight the War on Terror, it is imperative that we protect America's fallen heroes by ensuring that they are treated with respect, while being laid to rest.
Jon Porter

As we enter into the 110th Congress, it is imperative that we address ethics reforms needed to make this institution run correctly.
Jo Ann Davis

At a time when U.S. jobs are heading overseas at a record pace, and amidst increased sanctions on our manufacturers and producers from other countries, it's imperative that we do all we can to provide our businesses a climate to operate successfully.
Blanche Lincoln

Disarmament, with mutual honor and confidence, is a continuing imperative.
Dwight D. Eisenhower

Every man has his own destiny: the only imperative is to follow it, to accept it, no matter where it leads him.
Henry Miller

High bankruptcy rates, increased credit card debt, and identity theft make it imperative that all of us take an active role in providing financial and economic education during all stages of one's life.
Ruben Hinojosa

Humor is imperative, more important than food. You have a choice when someone dies. You can lie down or get back into life. Do something for someone else.
Doris Roberts

I have sometimes been haunted with the idea that it was an imperative duty, knowing what I know, and having seen what I have seen, to do all that lies in my power to show the dangers and the evils of this frightful institution.
Fanny Kemble

I think it's imperative to follow your heart and choose a profession you're passionate about, and if you haven't found that "spark" yet, if you're not sure what you want to do with your lives - be persistent until you do.
Steve Kerr

If nothing is to be done in the given situation, he must invent plausible reasons for doing nothing; and if something must be done, he must suggest the something. The unpardonable sin is to propose nothing, when action is imperative.
Charles Edward Merriam

If those committed to the quest fail, they will be forgiven. When lost, they will find another way. The moral imperative of humanism is the endeavor alone, whether successful or not, provided the effort is honorable and failure memorable.
E. O. Wilson

In this context, I believe it is an imperative for the new President to select and install his team as quickly as possible, and this does not imply that he must or should appoint members of the 'other' party to his Cabinet, which could contribute to inaction and inefficiency.
Richard V. Allen

It is absolutely imperative that we protect, preserve and pass on this genetic heritage for man and every other living thing in as good a condition as we received it.
David R. Brower

It is imperative for the health and safety of millions of workers that we ensure that breathing systems needed for protection are widely available, convenient and economical.
Bill Shuster

It is imperative that we make consumers more aware of the long-term effects of their financial decisions, particularly in managing their credit card debt, so that they can avoid financial pitfalls that may lead to bankruptcy.
Daniel Akaka

It is imperative that when thousands of selfless volunteers respond to those who have incurred the wrath of a natural disaster that legal liability need not be hanging over their heads.
Jon Porter