Page:Logic Taught by Love.djvu/63

 mathematicians a profession of ignorance about all of which they themselves are ignorant, such arrogance would faintly picture that of much (so-called scientific) Agnosticism.

Gratry seems to have foreseen that the Science of Induction would never be developed except by the unselfish co-operation of several men, each of whom should be willing to subordinate his own personal work to the carrying out of a common aim. Mr. Boole's work was, as he gratefully acknowledged, made possible by the generous and self-forgetting aid freely given to him by many contemporary mathematicians; and in particular by Professor De Morgan, who seemed to take a pleasure in effacing himself to bring forward the man whom he might have been expected to feel a rival. And one of my pleasantest recollections of Mr. Boole himself, is his studying with loving and almost rapturous delight the pages of the Oratorian Father, who had stated with masterly and exhaustive completeness the fundamental principle which he himself had been vainly endeavouring to express.

CHAPTER VIII GRATRY ON STUDY

"Seek ye the old paths."

is not only as showing the true nature of logical evidence that Gratry throws light on the intellectual problems of our day. His treatment of the question—What constitutes valid evidence? contains an answer