The Hermit is neither deep in meditation or study nor is he engaged in work or action. He is walking. This means to say that he manifests a third state beyond that of contemplation and action. He represents —in relation to the binary "knowledge —will" or "contemplation —action" or, lastly, "head —limbs"—the term of synthesis, (emphasis mine) namely that of heart. For it is the heart where contemplation and action are united, where knowledge becomes will and where will becomes knowledge. The heart does not need to forget all contemplation in order to act. and does not need to suppress all action in order to contemplate. It is the heart which is simultaneously active and contemplative, untiringly and unceasingly. It walks. It walks day and night, and we listen day and night to the steps of its incessant walking. This is why, if we want to represent a man who lives the law of the heart, (emphasis mine) who is centered in the heart and is a visible expression of the heart — the "wise and good father", or the Hermit —we present him as walking, steadily and without haste. The Hermit of the ninth Card is a man of heart, a solitary man who is walking. Therefore he is a man who has realized in himself the antinomy "knowledge — will" or "contemplation — action". For the heart is the solution here. 

MOT The Hermit