Authors:

There is not a more pleasing exercise of the mind than gratitude. It is accompanied with such an inward satisfaction that the duty is sufficiently rewarded by the performance

Joseph Addison, Richard Hurd, Henry George Bohn (1872). “The Works of the Right Honourable Joseph Addison”, p.464
There is not a more pleasing exercise of the mind than gratitude. It is accompanied with such an inward satisfaction that the duty is sufficiently rewarded by the performance