"Twenty years ago many chemists would have defended the theory of bond arms as a satisfactory explanation because they had become accustomed to thinking of it as unique and as ultimate."

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[Young] was afterwards accustomed to say, that at no period of his life was he particularly fond of repeating experiments, or even of very frequently attempting to originate new ones; considering that, however necessary to the advancement of science, they demanded a great sacrifice of time, and that when the fact was once established, that time was better employed in considering the purposes to which it might be applied, or the principles which it might tend to elucidate.

— Hudson Gurney