...I possess penetration, perseverance, conviction; I govern a mysterious people, who has taken for its motto, the motto of God, ‘Patiens quia oeternus... 
Alexandre Dumas, Pere 「The Man in the Iron Mask」
...The chevalier, while admiring De Guiche’s penetration, was leading him, blindfolded, to the brink of the precipice...
Alexandre Dumas, Pere 「Ten Years Later」
...With less penetration than Madame possessed, she attributed all to chance...
Alexandre Dumas, Pere 「Louise de la Valliere」
... "What extraordinary penetration," she cried...
W. E. B. Du Bois 「The Quest of the Silver Fleece」
...Fancy an animal with the murderous ferocity of a mink, the agilityof a squirrel, the penetration of a ferret and the cunning of a rat,infesting the thickets and barnyards of this country...
William T. Hornaday 「Our Vanishing Wild Life」
...In its forested habitat there is not sufficient loweringof the temperature nor sufficient penetration of strong winds...
Francis Harper 「The Barren Ground Caribou of Keewatin」
..." He visioneddimly some denizen of the vast depths, living beyond the limits of thesun's penetration, far in the abysmal darkness where its only lightmust be self-made...
Various 「Astounding Stories of Super-Science, June, 1930」
...We hand you this medal, emblematic of thefirst penetration of space, to do with as you will...
Charles Willard Diffin 「The Finding of Haldgren」
...A lively curiosity, a spirit of emulation,the desire of not being outdone, had the privilegeof giving to the natural vision an unusual powerof penetration...
George Chambers 「The Story of Eclipses」
...It was on the 25th of March, 1655, that the first satellite of Saturnwas detected by Huyghens, to whose penetration we owe the discovery ofthe true form of the ring...
Robert Stawell Ball 「The Story of the Heavens」
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