Sight is free and sight is irresponsible. I can cast my eye to the far horizon and then back to the fingers I hole up before my face, all in a fraction of a second and with no effort at all.  And I can repeat the operation at will. On the other had, were I to walk to that point on the horizon it would take time and effort, time and effort which I might feel I could better employ doing something else. To look costs me nothing but to go involves both a choice and a cost.” 

Touch — Gabriel Josipovici