The existence of some differences of language may, however, be too readily taken to disprove derivation.
The distinction is of greater importance than would appear when one realizes how obvious the facts really are, and in practice it happens frequently that speakers claim with success to disprove a proposition by disproving the fact alleged in support of it, or to establish a hypothesis by showing that facts agree with its consequences.
It was thought that it might be identical with hexaphenylethane, but the supposed synthesis of this substance by Ullmann and Borsum (Ber., 1902, 35, p. 2877) appeared to disprove this, although it showed that triphenylmethyl readily isomerized into their product, under the influence of catalysts.
He was attacked with quinsy, which rapidly brought about paralysis of the tongue, and he died on the 13th of September 1592, in circumstances which, as Pasquier reports them, completely disprove any intention of displaying antiChristian or anti-Catholic leanings.
It is that immense mass of letters that prove the real greatness of the statesman, and disprove De Retz's portrait, which is carefully arranged to show off his enemy against the might of Richelieu.
His student life was, however, broken by the pope's command to preach to the English in Rome; and a course of his lectures, On the Connexion between Science and Revealed Religion, deservedly attracted much attention, his general thesis being that whereas scientific teaching has repeatedly been thought to disprove Christian doctrine, further investigation has shown that a reconstruction is possible.
For the paradox of predication, which he had used to disprove the existence of plurality, was virtually a denial of all speech and all thought, and thus led to a more comprehensive scepticism than that which sprang from the contemporary theories of sensation.
They spent their energy in attacking Plato and Aristotle, and hence earned the opprobrious epithet of Eristic. They used their dialectic subtlety to disprove the possibility of motion and decay; unity is the negation of change, increase and decrease, birth and death.
It can be said confidently that the truth is between these two extremes (though in what exact year it is not easy to say), as will be evident from a consideration of the arguments urged, which in each case appear less to prove one extreme than to disprove its opposite.
Some held that if this were true ocean telegraphy would be impossible, and sought in consequence to disprove Thomson's conclusion.