On Wednesday, 3 December 2008, at 20:30 the ACG Art department of The American College of Greece celebrated the opening of "Silent Dialogues: Multimedia Portraits Throughout Time," an exhibition of works from the ACG Art collection, curated by the College's Art Curator, Megakles Rogakos. The exhibition coincided with the inauguration of the ACG Art Gallery, a new 330 m² exhibition space at the College (Agia Paraskevi campus).

"Upon encountering appealing visual art visitors are inspired to engage in ways dictated by pure instinct. This metaphysical communion, which develops organically between artwork and viewer, leads to 'silent dialogues'", Megakles Rogakos wrote in the catalog that accompanied the exhibition. He added: "Portraiture is a central subject matter in art and happens to be one of the ACG Art collection's strengths."

"Silent Dialogues" showcased 266 portraits by old as well as contemporary artists. Among the earliest artworks on display were an Egyptian faience Ushabti of 1000 BC, and an archaic porous stone Kouros Head from 600 BC, while among the latest were videos by contemporary artists, some of which had just been completed. The exhibition covered all art forms, ranging from painting to photography, electronic sculpture, or installations.

The exhibition's accompanying catalog was made available for free upon request. The exhibition was enriched with contemporary music composed especially for the occasion by the noted composer Thodoris Abazis.

"Silent Dialogues" was part of the inaugural events celebrating the appointment of Dr. David G. Horner as President of The American College of Greece, and the assumption of the position of Chancellor by former President Dr. John S. Bailey.