I myself have not seen even one tenth...

I myself have not seen even one tenth, rather one hundredth of realities and learning (which have been incorporated in these supplications), in other speeches of those noble ones, even did not find them in narrations and lengthy sermons. (Of course, with the exception of some narrations which deal with communications with Allah, monotheism, praise, and worship).

The mystery of this variation could be that those honourable ones in their narrations had spoken with the people while in their supplications and hymns have spoken with Allah (the Glorious, the Exalted). Obviously, the degree of speech, its culmination, and descent depends upon the degree of intelligence and comprehension of the addressee; the delicate and sensitive points which are spoken before an aware and knowledgeable addressee are not spoken before some one who lacks these characteristics.

Yes! These supplications, reached to us through Sinless Imams of the Prophet's Ahlul-Bait [a] as though form the complete reflection, or echo of whatever is contained in the Holy Qur'an. Or in other words these supplications constitute on Ascending-Qur'an in front of a Descending-Qur'an.

The later is the holy scripture which was revealed by Allah (the Glorious, the Exalted), to his esteemed servant - [s], while the former constitutes the Qur'an from Allah's most distinguished servants, ascending upward towards Him.

While the Qur'an is Allah's communications and candid words with his esteemed servants; these supplications are a communication of Allah's esteemed servant with Him, and this matter is not accepted and comprehended by any one, except a small number of believers who are thoroughly familiar and enlightened.

Also, it should be emphasized that the sinless Imams [a] through these supplications have done a great favour to us by leaving such precious souvenirs - the souvenirs and blessings, for which we are helpless to thank; it is our obligation to appreciate their worth; in our actions must utilize the etiquette and proper manners as recommended by them; and must try with best of our abilities lest we act as unthankful and unappreciative of truth.