Most citizens who responded to Einstein’s appeals wrote voicing their full support and ardent encouragement for the Committee’s work. Many donors wrote in with words to buoy the Committee’s spirits through their “great fight,” assuring Einstein and his scientists of, as Ward Duffy wrote, the public’s “complete confidence” in their initiative. Some writers, such as Olive Olsen, tried helpfully to remind the Committee that their work would ultimately lead to a positive end, suggesting that atomic energy would be remembered in the future as “the force that made men cooperate.” William Lowe Bryan believed that Einstein’s was “the one voice” who could bring the nations together, echoing the sentiment of numerous correspondents who expressed their immense faith in Einstein as the one person who would create true change.

Many correspondents, such as Adelaide Hancock, referenced the “deep privilege” they felt in contributing to the Einstein’s cause of peace, and countless people expressed their deep gratitude for the Committee’s work. When some, such as John Buck, saw the scientists flagging in their efforts, they wrote with passionate encouragement to continue the fight.