"A rich and mighty Persian once walked in his garden with one of his servants. The servant cried that he had just encountered Death, who had threatened him. He begged his master to give him his fastest horse so that he could make haste and flee to Teheran, which he could reach that same evening. The master consented and the servant galloped off on the horse. On returning to his house the master himself met Death, and questioned him, “Why did you terrify and threaten my servant?” “I did not threaten him; I only showed surprise in still finding him here. I originally planned to meet him tonight in Teheran,” said Death."

Taken from Viktor E. Frankl's book, Man's Search for Meaning. We are our worst enemies without knowing it. No matter how you interpret the story, it is the servant's fear of Death that brought him to his demise.

It would be interesting to wonder if Death did inform the servant that he was supposed to meet him in Tehran that evening, or did Death merely expressed his surprise (as he claims to have done) but did not disclose any other information. But either way, knowing the truth does not change the fact that he was going to die.