Quote by Isocrates
"Gratitude is a duty which ought to be paid, but which none have a right to expect."
More from Isocrates
"Isocrates spoke of the power of words to shape minds and societies."
"Education is the most powerful weapon we can use to change the world."
"The greatest thing you can do for another is not just to share your riches, but to reveal to him his own."
"As it is shameful for a man to grow old without seeing the beauty and strength of which his body is capable, it is equally shameful to grow old without knowing the beauty and strength of his mind."