This sounds strangely familiar.

In order to be a teacher in these higher regions of existence it is by no means sufficient to have simply developed the sense for them. To that end science is just as necessary as it is for the teacher's calling in the world of ordinary reality. Higher seeing alone does not make a knower in the spiritual any more than healthy sense organs make a scholar in the ream of sensible realities. Because in truth all reality, the lower as well as the higher spiritual, are only two sides of one and the same fundamental being, anyone who is ignorant in the lower branches of knowledge will as a rule remain ignorant in the higher. This fact creates a feeling of immeasurable responsibility in the person who, through a spiritual call, feels himself summoned to speak about the spiritual regions of existence. It imposes upon him humility and reserve. This should deter no one — not even those whose other circumstances of life afford them no opportunity for the study of ordinary science — from occupying himself with the higher truths. Everyone can fulfill his task as a man without understanding anything of botany, zoology, mathematics and the other sciences. He cannot, however, in the full sense of the word, be a human being without having come in some way or other nearer to an understanding of the nature and destination of man as revealed through the knowledge of the supersensible.

The highest to which a man is able to look, he calls the Divine, and he somehow must think of the highest destiny as being in connection with this Divinity. The wisdom, therefore, that reaches out beyond the sensible and reveals to him his own being and with it his final goal, may well be called divine wisdom or theosophy. To the study of the spiritual process in human life and in the cosmos, the term spiritual science may be given. When, as in this book, one extracts from this spiritual science those special results that have reference to the spiritual core of man's being then the expression theosophy may be employed to designate this domain because it has been employed for centuries in this way.

From this point of view there will be sketched in this book an outline of the theosophical conception of the universe. The writer of it will bring forward nothing that is not a fact for him in the same sense that an experience of the outer world is a fact for eyes and ears and the ordinary intelligence. The concern here is with experiences that become accessible to everyone who is determined to tread the path of knowledge described in a later chapter of this book. We take the right attitude towards the things of the supersensible world when we assume that sound thinking and feeling are capable of understanding everything of true knowledge that emerges from the higher worlds. Further, when we start from this understanding and therewith lay down a firm foundation, we have also made a great step forward towards, “seeing” for ourselves, even though in order to attain this, other things must be added also. We lock and bolt the door to the true higher knowledge, however, when we despise this road and are determined to penetrate the higher worlds only in some other way. To have decided to recognize higher worlds only when we have seen them is a hindrance in the way of this very seeing itself. The determination to understand first through sound thinking what later can be seen, furthers that seeing. It conjures forth important powers of the soul that lead to this seeing of the seer.

From the Introduction to Rudolf Steiner's Theosophy