Must the truth always be told to a cancer patient and/or his relatives? Taking a personal experience as the basis for discussion, the author examines this question in the context of Western cultural norms where death is taboo. The legal obligations to inform patients and the representation of cancer are discussed. Two key situations are considered: the delivery of a diagnosis of cancer and the announcement of a bad prognosis. What does it really mean "to tell the truth"? A best strategy for giving information to relatives is developed. The author's conclusion is that it seems more important to establish a "true" relationship with the cancer patient and his relatives than telling or not telling the whole truth.