People say travel broadens the mind. But this is not quite accurate: the experiences one has while traveling do the broadening, not the mere displacement of one's body through space. But then it is the mental aspect that constitutes the benefit. And presumably this has to do with the richness and novelty of the experiences and thoughts that physical travel occasions. But couldn't one have just such beneficial experiences and thoughts without physically moving? Couldn't the mental adventure of travel be duplicated by staying put and adventuring mentally. It is said Kant never traveled from his home time of Konigsberg, but in fact he traveled very widely--in his own mind. Kant was a world traveler! Intellectual stimulation, or aesthetic experience, or moral refelction (and living), are all forms of mental travel. The dull-minded traveler learns little from hurtling through space, but the stationary thinker whose mind is free can learn an enormous amount. What broadens the mind is mind travel.