reflect (think) deeply on a subject -- perhaps aloud
But he did not pursue the speculation, and without replying, he fell to musing on a quite different and personal matter.
When she mused on the past, she dwelt with pleasure, with tenderness, on the memories of her relations with Levin.
Musing on such thoughts Levin reached home in the darkness.
Levin, unobserved by the peasants, still lay on the haycock, and still looked on and listened and mused.
And the three women all fell to musing on the same thing.
"Yes, looking at the sky, I thought that the dome that I see is not a deception, and then I thought something, I shirked facing something," he mused.
How often she had mused on the subject, thinking of her friend abroad, Varenka, of her painful state of dependence, how often she had wondered about herself what would become of her if she did not marry, and how often she had argued with her sister about it!
She went on musing.
On the way he thought no more of money, but mused on the introduction that awaited him to the Petersburg savant, a writer on sociology, and what he would say to him about his book.
When she poured herself out her usual dose of opium, and thought that she had only to drink off the whole bottle to die, it seemed to her so simple and easy, that she began musing with enjoyment on how he would suffer, and repent and love her memory when it would be too late.
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…" she mused.
"Yes," she mused, "there was something unnatural about Anna Pavlovna, and utterly unlike her good nature, when she said angrily the day before yesterday: ’There, he will keep waiting for you; he wouldn’t drink his coffee without you, though he’s grown so dreadfully weak.’
Suppose I am taught," he went on musing, "to shoot; I press the trigger," he said to himself, closing his eyes, "and it turns out I have killed him," Alexey Alexandrovitch said to himself, and he shook his head as though to dispel such silly ideas.
"They’re all living, they’re all enjoying life," Darya Alexandrovna still mused when she had passed the peasant women and was driving uphill again at a trot, seated comfortably on the soft springs of the old carriage, "while I, let out, as it were from prison, from the world of worries that fret me to death, am only looking about me now for an instant.
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He mused aloud about the afternoon’s developments.
Let me muse on it on a while and I’ll get back to you.