The way to the heart is through the head. Even love is no exception to this. When it is not the mere expression of the sex drive, it is then based upon the mental pictures which we make for ourselves of the loved one. And the more idealistic these mental pictures are, the more blissful is the love. Here also the thought is father to the feeling. One says: Love makes us blind to the weaknesses of the loved one. The matter can also be grasped the other way round and it can be maintained that love opens the eye in fact for precisely the good qualities of the loved one. Many pass these good qualities by without an inkling, without noticing them. One person sees them, and just because he does, love awakens in his soul. What has he done other than make for himself a mental picture of something of which a hundred others have none. They do not have the love because they lack the mental picture.
Source: Rudolf Steiner – GA 4 – The Philosophy of Spiritual Activity – I – Conscious Human Action
Translated by William Lindeman