The most profitable and praiseworthy genius in the world is untiring industry.
A piece of simple goodness a letter gushing from the heart; a beautiful unstudied vindication of the worth and untiring sweetness of human nature a record of the invulnerability of man, armed with high purpose, sanctified by truth.
Gargoyles were the complement to saints; Leonardo's caricatures were complementary to his untiring search for ideal beauty. And gargoyles were the expression of all the passions, the animal forces, the Caliban gruntings and groanings which are left in human nature when the divine has been poured away. Leonardo was less concerned than his Gothic predecessors with the ethereal parts of our nature, and so his caricatures, in their expression of passionate energy, merge imperceptibly into the heroic.kenneth clark
One thing that cannot be denied to the realists: a constant and intense desire to write well, to write artistically. When I think of what they have done in the matter of the use of words, of the myriad verbal effects they have discovered, of the thousand forms of composition they have created, how they have remodelled and refashioned the language in their untiring striving for intensity of expression for the very osmazome of art, I am lost in ultimate wonder and admiration.George Moore