The celebrated Regulae of Descartes are precepts directed to the achievement of the new methodological ideal in any and every subject matter, however reluctant.
Aristotle is optimistic of achievement over the whole range of the sciences.
So far-reaching were the interests controlled by him in this capacity of humanist that his achievement as an Italian lyrist seems by comparison insignificant.
A still higher achievement is to apply to the chiselled base designs executed in colored enamels, finally covering the whole with translucid paste.
And as the twofold musical and dramatic achievement of one mind, it already places Wagner beyond parallel in the history of art.
Though it was forthwith printed in the course of the year 1642, he was content to circulate a limited number of copies privately 1; and when he found his work received with applause (it was praised even by Descartes), he seems to have taken this recognition of his philosophical achievement as an additional reason for deferring publication till the earlier works of the system were completed.
Silbermann, whose chief theoretical achievement was the recognition that the heat of neutralization of acids and bases was additively composed of two constants, one determined by the acid and the other by the base.
What the little pupil has thus far accomplished is widely known, and her wonderful attainments command general admiration; but only those who are familiar with the particulars of the grand achievement know that the credit is largely due to the intelligence, wisdom, sagacity, unremitting perseverance and unbending will of the instructress, who rescued the child from the depths of everlasting night and stillness, and watched over the different phases of her mental and moral development with maternal solicitude and enthusiastic devotion.
The work of Valdemar was completed and consolidated by his illustrious daughter Margaret (1 375 - 1 4 12), whose crowning achievement was the Union of Kalmar (1397), whereby she sought to combine the three northern kingdoms The Union f o into a single state dominated by Denmark.
He was a man of more promise than performance, and his chief achievement was the discovery of the elements iridium and osmium, which he found in the residues from the solution of platinum ores (1804).