The Seven Holy Pillars of Eternity

no other manner can be expressed than through number- and character-figures. For the material numbers and figures are capable of nothing further in the secrets of hidden things than that they prefigure and represent something through formal numbers and figures, insofar as they originate from and have been inspired by Intelligenzien intelligences and divine arithmetic, which link the boundaries of matter and spirit together, according to the will of the soul ascending on high, through the intense appropriation of that which acts in heavenly power, through the power and authority obtained for this purpose from God, by means of the universal world-soul and the observations of the heavenly constellations, in the matter applied to a suitable form, according to spheres of effect and means prepared for this purpose beforehand through magical art and diligence.

Same work, I, 33. Of the Signakeln signs/sigils and characters of natural things.

All stars have their own natures, properties, and qualities; their impressions and designations they also bring forth through their rays