Scheele, it was said, never forgot anything if it had to do with chemistry. He never forgot the look, the feel, the smell of a substance, or the way it was transformed in chemical reactions, never forgot anything he read, or was told, about the phenomena of chemistry. He seemed indifferent, or inattentive, to most things else, being wholly dedicated to his single passion, chemistry. It was this pure and passionate absorption in phenomena-noticing everything, forgetting nothing-that constituted Scheele's special strength.
Ben Jonson
Whosoever loves not picture is injurious to truth, and all the wisdom of poetry. Picture is the invention of heaven, the most ancient and most akin to nature. It is itself a silent work, and always one and the same habit.
