When I landed there, my attention was first engaged by a singular change in my sensations, through an increase of strength and activity. I had known that this change must take place, and had expected some amusement by observing it in my fellow travellers. As the weight of a body depends not on its own mass alone, but also on the force of attraction in the globe where it is placed, and as this attraction is in proportion to the mass of the globe, a man who goes out of our earth into the moon, which is much smaller, finds a great diminution of his weight. Still his muscular strength remains the same, so that he gains a great advantage in vigour and activity, and at the same time has a sensation of lightness not to be described. Though prepared for this, I could not immediately accommodate myself to the change. There was a small ditch in my way, and thinking to step over it, I sprung as far as a deer could leap. Nor could I at first regulate the effort of my muscles in walking, but every step was a great bound; and until I had had some experience, I was not able to walk with any moderation. While I was endeavouring to discipline my movements, I was amused by the astonishment of my fellow travellers, who knew not the cause of their own gambols, and were exhibiting great feats of activity when they intended to be perfectly sedate. A number of persons were seen bounding about like balls of Indian rubber. Some of them laughed, and others were terrified at their sudden want of substance. A large man, who in his own world had also been heavy, came bounding towards me with great consternation in his face: I seized him in one hand, raised him from the earth, and twirled him round my head with as much ease as a woman finds in tossing a young child; at which his terror and astonishment were redoubled. I endeavoured to make him understand why we were suddenly so active and so strong; but gravitation was a new study to him, for he had never had so frivolous a curiosity as to inquire the reason why he had always remained on the earth in preference to flying away from it, and accordingly I could not succeed in making his frolics intelligible. I perceived he did not believe me, when I told him, that before we reached the moon I had foreseen what gambols we should execute at our first arrival. As I was determined to travel alone, I soon left my companions, endeavouring not to jump about. After a short practice in walking I attained a tolerable steadiness; and as my journey was to be on foot, I found great advantage in the reduction of my weight, for I soon was able to move along with wonderful speed, and scarcely ever was weary. The sense of lightness was so singular, that it was impossible to make others imagine what I felt. Not only had my whole body acquired a new ease in moving, but every limb had a strange alacrity, and I could not raise my hand without being surprised by its readiness. It seemed as if I had been newly released from fetters.