Borrowing from Peter to pay Paul.

No man should so act as to make a gain out of the ignorance of another.

Nature has granted the use of life like a loan, without fixing any day for repayment.

Enjoy the blessing of strength while you have it and do not bewail it when it is gone, unless, forsooth, you believe that youth must lament the loss of infancy, or early manhood the passing of youth. Life's race-course is fixed; Nature has only a single path and that path is run but once, and to each stage of existence has been allotted its own appropriate quality; so that the weakness of childhood, the impetuosity of youth, the seriousness of middle life, the maturity of old age.. each bears some of Nature's fruit, which must be garnered in its own season.

Law stands mute in the midst of arms.

Man must suffer to be wise.

The happiest end of life is this: when the mind and the other senses being unimpaired, the same nature which put it together takes asunder her own work.