Mused

He mused about the mysteries of the ocean while scuba diving.

"The professor mused over the complexities of the theory."

He often mused about the fragility of life and the inevitability of death.

He mused about the amusing observations in the stand-up comedy show.

She mused at the ridiculous costumes in the carnival parade.

She often mused about the meaning of life and the purpose of human existence.