Imam Khomeini's famous book "Forty Hadith" includes range of discussions

Imam Khomeini's selection and exposition of Forty ahadith that range over a broad area of Islamic philosophy, ideology, ethics, metaphysics and spirituality.

Faith, which is fortune of the soul, is different from knowledge, Imam Khomeini explained

Imam Khomeini through his theological and mystical works explains that faith, which is the joy and fortune of the soul, is different from knowledge, which is the pleasure and satisfaction of the intellect.

Human have proofs for existence of God and reality of the Resurrection, Imam Khomeini explains

Imam Khomeini explains difference between knowledge and faith by saying "sometimes you see that one has knowledge of these realities but has no faith."

The sacrifices of Imam's wife.

Imam Khomeini maintained a balance between the intellect [‘aql] and narration [naql]

Imam Khomeini in his theological works maintained a balance between the intellect [‘aql] and narration [naql], which has been acceptable to the great Shī‘ah scholars,

Imam Khomeini warned against lack of faith certainty

They know the proofs for the existence of God and the reality of the Resurrection, but these very same intellectual proofs may be veils covering the heart which do not permit the light of faith to shine in.

Imam Khomeini suggested several practical remedies for curing anger

According to Imam Khomeini, among the practical remedies the important ones involve withholding of the self in the initial stages of anger.

Imam Khomeini explained difference between faith and knowledge

It was mentioned earlier that faith, which is the joy and fortune of the soul, is different from knowledge, which is the pleasure and satisfaction of the intellect.