In 1873, the cornerstone of Sage Hall was laid. This new hall was to house the Sage College for Women and thus to concretely establish Cornell University's coeducational status. Ezra Cornell wrote a letter for posterity—dated May 15, 1873—and sealed it into the cornerstone. No copies of the letter were made, and Cornell kept its contents a secret. However, he hinted at the theme of the letter during his speech at the dedication of Sage Hall, stating that "the letter deposited in the cornerstone addressed to the future man and woman, of which I have kept no copy, will relate to future generations the cause of the failure of this experiment, if it ever does fail, as I trust in God it never will."