Sage Sankara explains in Manduka that those who study the Sutras are religious minds, intellectual children.+

The seeker must know the difference between religion and spirituality or Adyatnma. 

Religion is meant for the ignorant who are incapable of grasping the truth. Spirituality or Adythma is meant for those who are seeking to realize God in truth. 

Karma Kanda belongs to religion. Gnana Kanda belongs to spirituality or Adyathma. Karma is meant for religious followers, Gnana is meant for the truth seekers.   

The rituals mentioned in the Karmakanda of the Vedas are sought to be negated in the Gnanakanda which is also part of the same scripture. While the Karmakanda enjoins upon you the worship of various deities and lays down rules for the same, the Gnanakanda constituted by the Upanishads ridicules the worshipper of deities as a dim-witted person no better than a beast.

This seems strange, the latter part of the Vedas contradicting the former part. The first part deals throughout with Karma while the second or concluding part is all about Gnana. 

Owing to this difference, people have gone so far as to divide our scripture into two sections: the Vedas (that is the first part) to mean the Karmakanda and the Upanishads (Vedanta) to mean the Gnanakanda.

First Mundaka - Chapter 2 (10) - Ignorant fools, regarding sacrifices and humanitarian works as the highest, do not know any higher good. Having enjoyed their reward on the heights of heaven, gained by good works, they still remain in ignorance of the Atman, the God in truth.

As a person, one performs rituals throughout his life.  The person who performs rituals and aspires for rewards will view the world in which he exists as a reality. However, the Soul, the Self unborn eternal hidden by the world in which he exists.  From the standpoint of the Soul, the world in which he exists is merely an illusion. The scriptures dealing with rituals, rewards, etc. are therefore addressed to an ignorant person.

First Mundaka - Chapter 2 (9) - Children, immersed in ignorance in various ways, flatter themselves, saying: We have accomplished life's purpose. Because these performers of karma do not know the Truth owing to their attachment, they fall from heaven, misery-stricken, when the fruit of their work is exhausted.

First Mundaka - Chapter 2 (8) - Fools, dwelling in darkness, but wise in their own conceit and puffed up with vain scholarship, wander about, being afflicted by many ills, like blind men led by the blind.

Ish Upanishad declares: - Those people who have neglected the attainment of Self-knowledge and have thus committed suicide 10/11/12

In Brahma Sutra Sage Sankara takes the position that there is another entity outside us, i.e. the wall really exists separately from the mind. This was because, Sage Sankara explains in Manduka that those who study the Sutras are religious minds, intellectual children, hence his popular viewpoint to assist them. These people are afraid to go deeper because it means being heroic enough to refuse to accept Sruti, and God's authority, in case they mean punishment by God.

Sage Sankara says: Keep the scriptures for children but throw them on the fire for wise seekers.

In Brahma Sutras Sage Sankara takes for granted, assumes that a world was created: He there mixes dogmatic theology with philosophy.

That God created the world is an absolute lie; nevertheless, you will find Sage Sankara (in his commentary on Vedanta Sutras) clearly says this! He has to adapt his teachings to his audience, reserving the highest for philosophical minds.

The text of Brahma Sutras is based on religion, dogmatism, but in the commentary Sankara cleverly introduced some philosophy. If it is objected that a number of Upanishads are equally dogmatic because they also begin by assuming Brahman, but a few Upanishads do not but prove Brahman at the end of a train of proof.

The causality and creation, but are for religious people only. Religion is only for those who are unable to understand truth beyond the form, time, and space. Religion is not final. It only gives satisfaction to the populace.

Self-knowledge is for the whole of humanity to free them from experiencing the birth, life, death, and world as reality.

People of small intelligence follow religion and believe that the world was created by God. But how do they know that God did so? When a pot is created, one can see both pot and its maker, but not in the case of the world.

Sage Sankara says:~ V-63-"Without knowing and examining the external world, one can’t know the Truth, as the idea that the external world exists, won't go. It can go only by an inquiry into the nature of the external world.

The seeker has to begin his analysis with the world first, not with the Soul, which is present in the form of consciousness. The world in which you exist, consciousness is the finality.

A Gnani sees the world in which he exists as consciousness." But to know this they must be examined and studied.

The yogi does not care to know about the world" and for a Gnani nothing remains to be known for him because he is fully aware of the fact that the universe in which he exists is nothing but an illusion created out of consciousness.

The Pundits do not know the true nature of the world in which we exist. Scriptures deal only with the Objects, not with the Witness of the objects.

If one starts with the idea that Samsara (universe) exists, he can never see the Soul, which is present in the form of consciousness, because Samsara (world) is an illusion and only ignorant people read it as a reality. : ~ Santthosh Kumaar