DEUT1232 Gratitude for what others have done was indicative of the health of the soul. The Rabbis expressed this in a proverb: "Into the well from which you have drunk, throw no stones". (B.K. 92b) Does not scripture tell us not to despise the Egyptian "because thou wast a stranger in his land"? [this verse]. It is imperative that we ourselves do not suffer from the defects of which we complain in another. (B. Metz. 107b; B.B. 60b: ["Rabbi Natan used to say: Whatever defect is in you, do not call your fellow"] -- Is it not ridiculous when the pot calls the kettle black? We must take care to speak about a thing only when we know it for certain; at no time must you repeat anything about another, especially if it be derogatory to him and of which the truth is doubtful. (Yeb. 65b).