“And only now, when he was gray-haired, had he fallen in love properly, thoroughly, for the first time in his life.”

“That girl had ruined his life. He had fallen in love with her fast and hard. Stella had stormed into his perfectly normal life and scrambled it until he didn’t know what was worth fighting for anymore. All his dreams and ambitions featured her now. Every time he imagined his future life, he saw her in it, and every time that happened he had to remind himself that she didn’t want to be imagined there. She didn’t want him, not for the long run.When in fact, Stella was all he wanted.”

“Nothing is so sad, in my opinion, as the devastation wrought by age. My poor friend. I have described him many times. Now to convey to you the difference. Crippled with arthritis, he propelled himself about in a wheelchair. His once plump frame had fallen in. He was a thin little man now. His face was lined and wrinkled. His moustache and hair, and hair, it is true, were still of a jet black colour, but candidly, though I would not for the world have hurt his feelings by saying so to him, this was a mistake. There comes a moment when hair dye is only too painfully obvious. There had been a time when I had been surprised to learn that the blackness of Poirot's hair came out of a bottle. But now the theatricality was apparent and merely created the impression that he wore a wig and had adorned his upper lip to amuse children!”

“She wasn't looking her best; her hair was coming down, for she had shed hairpins as she'd run, and her face lacked powder and lipstick. She looked hot and tired and surprisingly happy. He thought that he had never seen anyone quite as beautiful, so absolutely necessary to his happiness. It wasn't the first time he had fallen in love, but he knew that this was the last.”

“He held his hat in his hand; there was no disorder in his clothing; his coat was carefully buttoned: he was very pale, and he trembled slightly; his hair, which had still been gray on his arrival in Arras, was now entirely white: it had turned white during the hour he had sat there.”

“There is no denying that Eros was now in love.He had fallen in love with his wife, Helen, more than 15 years ago, & that was why he married her.He had now fallen in love again with his new Secretary.And that was what was now driving him bonkers.[MMT]”