How Does One Attain Knowledge of the Spiritual World?

Beside him lives the human being, who certainly by his nature is a higher being, but who is permeated by desires, instincts, passions through which he can stray from his strict regularity. He first has to overcome something within himself, if he wants to follow his own inner laws as a plant follows its innate laws. Now the human being can say to himself; The expression of desires, of instincts in me is the red blood. In a certain way, I can compare it with chlorophyll, the chaste plant sap in the red rose, and can say: If man becomes so strong within himself that the red blood is no longer an expression of what pushes him down below himself, but of what lifts him above himself—when it becomes the expression of such a chaste being like the plant sap, which has turned into the red of a rose, or in other words; when the red of the rose expresses the pure inwardness, the purified nature of a human being in his blood, then I have before me the ideal of what man, by overcoming the outer nature, can achieve and which presents itself to me under the symbol of the black cross, the charred wood. And the red of the rose symbolises the higher life that awakens when the red blood has become the chaste expression of the purified, instinctive nature of man, which has overcome itself.