The disciples ask Jesus in Matthew 18:1:  Who gets the highest rank in God's kingdom? In answering them Jesus called over a child, and placed him in the middle of the room, and said; I am telling you, once and for all, that unless you return to square one and start over like children, you are not even going to get a look at the kingdom.  Jesus is saying that the childlike mind is more receptive to Truth than the over-intellectual who demands too rational an explanation of those truths which must be accepted on faith alone.