Citation help needed

Hi all,

I'm going nuts trying to find an exact citation for this:

"There are more ideas on earth than intellectuals imagine. And these ideas
are more actice, stronger, more resistant, more passionate than
'politicians' think. We have to be there at the birth of ideas, the
bursting outward of their force: not in books expressing them, but in
events manifesting this force, in struggles carried on around ideas, for or
against them."

Can anyone help?

Thanks in advance,

Tony Slagle, Ph.D.
Assistant Professor of Communication and Rhetoric
Department of English, Humanities
University of Puerto Rico, Rio Piedras
San Juan, PR 00931

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