Knowledge must be accompanied by refinement and purification, Imam explained

Imam Khomeini through his books and works explains that If man does not cast pollution from the core of his soul, not only will whatever studying and learning he does be of no benefit by itself, rather it will actually be harmful.

Obedience to God gives ample pleasure, Imam explains

Imam Khomeini explains that faithful people will also notice that obedience to God gives ample pleasure.

Always scrutinize your secret intentions, Imam's spiritual advise to believers

Imam Khomeini advised believers and faithful people about always scrutinizing their secret intentions, and strictly taking account of everything in the same manner as one business partner is accountable to the other.

God Almighty has created faculties in the invisible world of the inner self, Imam Khomeini explained

Imam Khomeini through his theological works explained that God Almighty has created certain powers and faculties in the invisible world of the inner self.

Man cannot construct others unless he himself is constructed, Imam Khomeini elucidated

Imam Khomeini, the late founder of the Islamic Republic through his theological works explained that man cannot construct others unless he himself is constructed and the country cannot be constructed if others themselves are not constructed.

How much did Imam Khomeini attach significance to personal training, spirituality?