In 1863, John Stuart Mill wrote: "The entire history of social improvement has been a series of transitions, by which one custom or institution after another, from being a supposed primary necessity of social existence, has passed into the rank of a universally stigmatised injustice and tyranny.
Water as the source of life in many myths, as that which is an absolute necessity for existence, and as that which cleanses is the most all-encompassing means of restoring health.
But even if comradeship is its primary reason for existence, Masonry has its charitable side as well.
A life lived according to nature requires only the bare necessities required for existence, and one can become free by unshackling oneself from any needs which are the result of convention.
Fashion is not a primary necessity in life.
I can add nothing to this graphic expression of the necessity for the existence of the rule which, until today, kept inviolate investigative reports.
It may, indeed, seem harsh in its exercise, usually is on some individual, but the imperative necessity for its existence precludes any limitation upon it when not exerted arbitrarily.
Other models of moderate realism were developed in the Sakya tradition, that also invoke the necessity for the existence of a real shared property without which our thinking would be arbitrary.
The necessity for, and existence of, the S2 pocket is in question.
Reduction in leaf surface may be related to the necessity of reducing water loss through the process of transpiration, a requirement for existence in a desert environment.
We can use the sentential operator "□" for metaphysical necessity, the one-place predicate "E" for existence, and the two-place sentential operator "→" for material implication.
