"I began conducting when I was in school, around age 12, because I was writing little theater pieces and wanted to perform them. And then somehow I got started on it. I love doing it, but I have to ration myself very severely or I wouldn't get anything else done."

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It is known to all persons who are conversant in experimental philosophy, that there are many little attentions and precautions necessary to be observed in the conducting of experiments, which cannot well be described in words, but which it is needless to describe, since practice will necessarily suggest them; though, like all other arts in which the hands and fingers are made use of, it is only much practice that can enable a person to go through complex experiments, of this or any kind, with ease and readiness.

— Joseph Priestley