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

After 1980, you never heard reference to space again. Surface, the most convincing evidence of the descent into materialism, became the focus of design. Space disappeared.
Arthur Erickson

And if you are playing in several meters at once, there has to be a - not a rigid - but there definitely has to be a reference to a common pulse in the band.
Robert Fripp

At the same time, new concepts and abstractions flow into the picture, taking up the task of describing the universe without reference to such time or space - abstractions for which our language lacks adequate terms.
Benjamin Whorf

Besides, it doesn't make any sense to have these characters living in the year 3000 when all their points of reference are from the pop culture of the 80's and the 90's.
Joel Hodgson

Distinctly American poetry is usually written in the context of one's geographic landscape, sometimes out of one's cultural myths, and often with reference to gender and race or ethnic origins.
Diane Wakoski

Each age tries to form its own conception of the past. Each age writes the history of the past anew with reference to the conditions uppermost in its own time.
Frederick Jackson Turner

Everything deep is also simple and can be reproduced simply as long as its reference to the whole truth is maintained. But what matters is not what is witty but what is true.
Albert Schweitzer

For as long as one has no further point of reference, apart from the position of the maximum, the wavelength thus remains uncertain by an integral factor.
Max von Laue

For the speedy reader paragraphs become a country the eye flies over looking for landmarks, reference points, airports, restrooms, passages of sex.
William H. Gass

For when it is the good that is under consideration, and the ethical object is predominant, truth must be considered more in reference to art than science, if, that is, unity is to be preserved in the work generally.
Friedrich Schleiermacher

I especially object to having my character assassinated by reference to events from my past which bear absolutely no relationship to the question of who the anthrax killer is.
Steven Hatfill

I feel a sense of sadness and joy. Mostly sadness though about what I've experienced and sadness about what others have experienced in reference to the stroke.
Luther Vandross

I was trying to write an autobiography using prints and patterns that reference emotional, psychological, and personal development in my work, as a person growing up, figuring out who I was. I used fabrics to stand in for occurrences.
Jim Hodges

I wrapped "Buffy" and I always felt on "Buffy" that they wanted to keep me younger for a specific reason. It seemed like I was getting younger every year that I was on the show. I think there was a reference to me being 15, then 14.
Michelle Trachtenberg

I'm always collecting emotions for future reference.
Harlan Howard

If Hitler invaded hell I would make at least a favorable reference to the devil in the House of Commons.
Winston Churchill

In 1963 and later papers, I pointed out that the special market characteristics of medical care and medical insurance could be explained by reference to differences in information among the parties involved.
Kenneth Joseph Arrow

In all nations an exceptional man exists that compensates the deficiencies of the remainder. In those moments, when humanity is found collectively in a state of decadence, there always remain those exceptional beings as point of reference.
Augusto Roa Bastos

In reference to Cat Stevens, it is very, very important we have accurate information on our terrorist watch list and our no fly list and that you have a remedy.
Asa Hutchinson