Richard Collier: Please, don't leave. You have no idea how far I've come to be with you.
Richard Collier: I owe you an apology. I understand you now. You have nothing but the best motives in mind for her, but so do I.
Older Elise: Come back to me.
Elise McKenna: Reechard. Reeeeeeechaaaarrrrd.
Elise McKenna: There is so much to say... I cannot find the words. Except for these: 'I love you.'.
Richard Collier: Arthur, you know in the Hall of History, there's a photograph, a young woman. There's no nameplate.
Arthur Biehl: Yes, that's Elise McKenna. She was a famous actress in her day. Starred in a play in the hotel theater.
Richard Collier: I-I'm sorry. Did you say there was a theater here?
Arthur Biehl: Yes. Down by the lake.
Richard Collier: Really? When was this play done?
Arthur Biehl: 1912.
William Fawcett Robinson: Excess within control.
Answer: He was no longer able to put everything out of his mind, which was a requirement to successfully time-travel. He was distraught and unable to focus enough mentally. He stopped eating, and as time went on he became weaker and weaker.