We must guard against disrespectful, disparaging, and criticizing thoughts. We must try to practice reverence and devotion in our thinking at all times.

If spiritual science is to do the same for spirit that natural science has done for nature, it must investigate quite differently from the latter. It must find ways and means of penetrating into the sphere of the spiritual, a domain which cannot be perceived with outer physical senses nor apprehended with the intellect which is bound to the brain.

Whereas what man can learn about the world through his senses and through the intellect which relies upon sense-observation may be called 'anthropology,' what the spiritual man within us can know may be called 'anthroposophy.'

Rudolf Steiner Quotes