“Sometimes I feel sure he is as mad as a hatter and then, just as he is at his maddest, I find there is a method in his madness.”

“Poirot was standing in the larder in a dramtic attitude. In his hand he was brandishing a leg of mutton.'My dear Poirot! What is the matter? have you gone mad?''Regard i pray you this mutton! But regard it closely!”

“I am not mad. I am eccentric perhaps--at least certain people say so; but as regards my profession. I am very much as one says, 'all there.”

“A great many men are mad, and no one knows it. They do not know it themselves”

“A man doesn't want to feel that a woman cares more for him than he cares for her. He doesn't want to feel owned, body and soul. It's that damned possessive attitude. This man is mine---he belongs to me! He wants to get away --- to get free. He wants to own his woman; he doesn't want her to own him.(Simon Boyle)”

“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!”

“I suppose next time I come home I shall find you wearing false moustaches—or are you doing so now?' Poirot winced. His moustaches had always been his sensitive point. He was inordinately proud of them. My words touched him on the raw. 'No, no, indeed, mon ami. That day, I pray the good God, is still far off. The false moustaches! Quelle Horreur!’ He tugged at them vigorously to assure me of their genuine character. 'Well, they are very luxuriant still,' I said. 'N’est-ce pas? Never, in the whole of London, have I seen a pair of moustaches to equal mine.' A good job too, I thought privately.”