“I believe,” returned Doctor Manette, “that there had been a strong and extraordinary revival of the train of thought and remembrance that was the first cause of the malady. Some intense associations of a most distressing nature were vividly recalled, I think. It is probable that there had long been a dread lurking in his mind, that those associations would be recalled—say, under certain circumstances—say, on a particular occasion. He tried to prepare himself in vain; perhaps the effort to prepare himself made him less able to bear it.”

“Would he remember what took place in the relapse?” asked Mr. Lorry, with natural hesitation.

The Doctor looked desolately round the room, shook his head, and answered, in a low voice, “Not at all.”

“Now as to the future,” hinted Mr. Lorry.

“As to the future,” said the Doctor, recovering firmness. “I should have great hope. As it pleased Heaven in its mercy to restore him so soon, I should have great hope. He, yielding under the pressure of a complicated something, long dreaded and long vaguely foreseen and contended against, and recovering after the cloud had burst and passed, I should hope that the worst was over.”

“Well, well! That’s good comfort. I am thankful!” said Mr. Lorry.

“I am thankful!” repeated the Doctor, bending his head with reverence.  –Charles Dickens “A Tale of Two Cities”