No one has ever become poor by giving.
Attributed
relationshipsgivingwealthservicepovertySource: Het Achterhuis (The Diary of a Young Girl), Anne Frank, 1947
This line is genuinely from Anne Frank's diary and is listed among her sourced quotations. It is commonly cited to the entry of 26 March 1944, though I cannot confirm that date with confidence, and English wording varies slightly between the Barbara Mooyaart-Doubleday and Susan Massotty translations. Attribution to Anne Frank is well founded; the precise entry and translation are the open questions.