So religion without philosophy is sentiment, and philosophy without religion is mental speculation. Both must be combined

Prabhupada: Because it is a science. Religion means a kind of faith. It is not faith. It is a science. Science must be based on logic and philosophy. Science means that. And religion means sometimes sentiments. So religion without philosophy is sentiment, and philosophy without religion is mental speculation. Both must be combined. Then it is perfect.

 

>>> Ref. VedaBase => Bhagavad-gita 7.1–3 — September 10, 1973, Stockholm