So far spiritual life is concerned, it does not depend on the material brain substance. It is different thing. It is spiritual platform. It has nothing to do with this bodily construction. You must remember. We don't make any distinction that a man can be better Krsna consciousness than woman. No. A woman can be better Krsna consciousness because they are very simple. They can accept any religious system. Generally the women, they accept it because they are very simple. They have no crooked mind. Sometimes they are exploited therefore. So in the spiritual platform there is no such distinction, although in the material… Just like the bodily construction of man is different from woman, similarly, the brain substance may be also different, but that does not disqualify any woman for spiritual advancement in Krsna consciousness.

From Srila Prabhupada's lecture on Srimad-Bhagavatam 1.2.6 — August 3, 1968, Montreal