philosophize endlessly

Translations
бесконечно философствовать
Someone could philosophize endlessly about the meaning of happiness.
Кто-то мог бы бесконечно философствовать о смысле счастья.
Definitions
To engage in deep, often abstract discussions or reflections about fundamental questions of existence, knowledge, values, and reason without arriving at a definitive conclusion, often leading to prolonged and circular debates.