Rudolf Steiner said this quote

Just as in the body, eye and ear develop as organs of perception, as senses for bodily processes, so does a man develop in himself soul and spiritual organs of perception through which the soul and spiritual worlds are opened to him. For those who do not have such higher senses, these worlds are dark and silent, just as the bodily world is dark and silent for a being without eyes and ears.

~ Rudolf Steiner

In order to approach a creation as sublime as the Bhagavad-Gita with full understanding it is necessary to attune our soul to it.

~ Rudolf Steiner

All knowledge pursued merely for the enrichment of personal learning and the accumulation of personal treasure leads you away from the path, but all knowledge pursued for growth to ripeness within the process of human ennoblement and cosmic development brings you a step forward.

~ Rudolf Steiner

Failure to take note of the fact that the character of twentieth-century humanity differs from that of humanity in the fifteenth century, let alone before and at the time of the Mystery of Golgotha, is to sleep through the process of world evolution.

~ Rudolf Steiner