"The Spirituality and Luminosity of Idd-e-Naw-ruz: The description of the religious spring and the real Naw-ruz festival is that, just as the sun is the centre of the universe (solar system) and does not move from its place, the eternal light of the Imam of the time is always in the same state and does not change at all. Further, just as the different parts of the planet earth due to its daily and annual movement pass through light and darkness and become close to or far from the sun and due to which the changes in day and night, and seasons of spring, summer, autumn and winter continue, and as in the Arctic, the Antarctic and in many other deserts of the planet earth the question of habitation, season of spring and Naw-ruz festival does not arise at present, in the same way there is still time for the light of Imamat to shine on some human souls. Further, just as in certain regions of the planet earth, due to their being on the equator or close to it, plants do not become dormant, in the same way there are certain mu'mins in whose heart the heat of devotion and love for the Imam of the time always remain and the flowers of spiritual happiness always bloom. This example of the beneficence of the light of Imamat is according to the physical and spiritual position of the select and the common.

The Imam of the time with respect to his corporeality is the mazhar of the Divine favours and blessings, and the mirror of the eternal light. It is because of this that the spiritual season of the Ismaili worlds always remain temperate and extremely pleasant and there is always spring in them. Thus the real Naw-ruz festival is found in the individual spirituality of mu'mins. That is, every sincere mu'min's initial progress is his Naw-ruz festival, in the sense that when the mu'min truly obeys the light of Imamat, the personal world of his heart, due to spiritual vegetation and prosperity, becomes like the garden of paradise." [Source: A Key to Wisdom, pp.65-67]