He was one of the two most prominent in his day, which was, I believe, in the 1980s (at least, it was relatively recently).
I believe he was famous for postulating the existence of quarks, and for giving their various functions names like “charm,” etc.
He admonished his students not to concern overly themselves with the question of whether or not the sub-atomic particles they studies “really” existed, claiming, I think, that the question was irrlevant.
I need his name, and hopefully a quote from him concerning the above, for a paper I’m writing. Can anyone out there help me out?