His mind was naturally turned to precision and exactness, and it is evident that he would have shown this quality in any other profession, had he practiced another. Methodical and regular in all his habits, he prepared and ground his own colors, and made his own brushes of a peculiar shape, and he kept them locked up in a case made for the purpose, that they might be free from soil. He permitted no one to enter his studio, save a very few friends, and when he entered himself, he went as softly as he could tread, so as not to raise the dust, and after taking his seat, waited some time till the air was settled before he opened his box and went to work; scarcely a breath of air was allowed to ventilate his painting-room.