Immortality of the soul, positive freedom of will, and the existence of an intelligent ground of things are speculative ideas practically warranted, though theoretically neither demonstrable nor comprehensible.
In a few cases the hydrom strand is continued into the cortex of the stem as a leaf-trace bundle (the anatomically demonstrable trace of the leaf in the stem).
The points in relation to this offering which are clearly demonstrable from the Christian writers of the first two centuries, but which subsequent theories have tended to confuse, are these.
But Aquinas, though he holds the fact of creation to be rationally demonstrable, regards the beginning of the world in time as only an article of faith, the philosophical arguments for and against being inconclusive.
It was reserved for Charles Darwin, in the year 1859, to place the whole theory of organic evolution on a new footing, and by his discovery of a mechanical cause actually existing and demonstrable by which organic evolution doctrine must be brought about, entirely to change the attitude in regard to it of even the most rigid exponents of the scientific method.
That he had every right to such a title is demonstrable to all who distinguish between the positive sciences and the philosophy which co-ordinated the truths and methods of these sciences into a doctrine."
It is not, indeed, demonstrable, but there are many presumptions, besides some fragments of direct evidence, which make it more than probable that the old administrative arrangements both of the provinces and of the towns, but especially of the latter, remained practically undisturbed at the period of the Gothic occupation of Spain.'
The Kantian categories are, indeed, demonstrable and true, but their application to the given is meaningless and unthinkable.
The propositions maintained in the argument are - "(1) That something has existed from eternity; (2) that there has existed from eternity some one immutable and independent being; (3) that that immutable and independent being, which has existed from eternity, without any external cause of its existence, must be self-existent, that is, necessarily existing; (4) what the substance or essence of that being is, which is self-existent or necessarily existing, we have no idea, neither is it at all possible for us to comprehend it; (5) that though the substance or essence of the self-existent being is itself absolutely incomprehensible to us, yet many of the essential attributes of his nature are strictly demonstrable as well as his existence, and, in the first place, that he must be of necessity eternal; (6) that the self-existent being must of necessity be infinite and omnipresent; (7) must be but one; (8) must be an intelligent being; (9) must be not a necessary agent, but a being endued with liberty and choice; (to) must of necessity have infinite power; (I I) must be infinitely wise, and (12) must of necessity be a being of infinite goodness, justice, and truth, and all other moral perfections, such as become the supreme governor and judge of the world."
An ocular segment claimed by the former division is not present or in no case demonstrable in the latter.
Above all, he broke with the prevalent view which regarded theology as essentially intellectual in its appeal and demonstrable by processes of exact logical deduction.
In one form or another such a theory of human descent has in our time become part of an accepted framework of zoology, if not as a demonstrable truth, at any rate as a working hypothesis which has no effective rival.
It is thus demonstrable that the material for our Grail legend, in its present form, existed long anterior to any extant text, and there is no improbability in holding that a confused tradition of pagan mysteries which had assumed the form of a popular folk-tale, became finally Christianized by combination with an equally popular ecclesiastical legend, the point of contact being the vessel of the common ritual feast.
And much of our knowledge, as he shows in the fourth book, is rational insight, immediate or else demonstrable, and thus intellectually necessary in its constitution.
He argues in the first book against the innateness of our knowledge of God and of morality; yet in the fourth book he finds that the existence of God is demonstrable, being supported by causal necessity, without which there can be no knowledge; and he also maintains that morality is as demonstrable as pure mathematics.
Of these, including as they do all inductive science, he reports that demonstrable knowledge " is very short, if indeed we have any at all "; and are not thrown wholly on presumptions of probability, or else left in ignorance.
Our knowledge under Locke's fourth category of relations - real existence - includes (a) intuitive perceptions of our own existence; Real exist- (b) demonstrable certainty of the existence of God; and.
But to Butler's more cautious mind the completeness of this harmony did not seem sufficiently demonstrable to be taken as a basis of moral teaching; he has at least to contemplate the possibility of a man being convinced of the opposite; and he argues that unless we regard conscience as essentially authoritative - which is not implied in the term " moral sense " - such a man is really bound to be vicious; " since interest, one's own happiness, is a manifest obligation."
His great plea for toleration is based on the impossibility of erecting theology into a demonstrable science.
The second point of difference between tapeworms and Trematodes lies in the absence of a definitely demonstrable " brain."
Yet not only were the latter an independent invention, but it is almost demonstrable that the nakshatras, in their more recent organization, were, as far as possible, assimilated to them.