• This is a proof of a well-trained mind, to rejoice in what is good and to grieve at the opposite.

    Marcus Tullius Cicero: This is a proof of a well-trained mind, to rejoice in what is good and to grieve at the opposite.
    "Hoyt's New Cyclopedia Of Practical Quotations" by Jehiel Keeler Hoyt, De Amicitia, XIII, p. 326-29, 1922.