Alfred Painter: Saying thank you is more than good manners. It is good spirituality.
Albert Schweitzer: To educate yourself for the feeling of gratitude means to take nothing for granted, but to always seek out and value the kind that will stand behind the action. Nothing that is done for you is a matter of course. Everything originates in a will for the good, which is directed at you. Train yourself never to put off the word or action for the expression of gratitude.
Eric Hoffer: The hardest arithmetic to master is that which enables us to count our blessings.
Henry Ward Beecher: Gratitude is the fairest blossom which springs from the soul.