«Духовная жизнь — камень, брошенный в небо, движешься — летишь вверх, остановишься — падаешь на землю». Как понимаете смысл данной цитаты?

It was a gloomy day. A stormy wind (blow) when I (go) on board the ship at three in the afternoon. I (unpack) my luggage and (not pay) any attention to the weather. I (notice) that we (be) late and later on I (find) out that it (take)us two hours to start on the voyage. So when we (reach) the open sea, huge waves (rise). The ship (throw) about like a toy on the huge waves. I (have) to stay on deck to help the sailors. I was afraid I (can) (wash) overboard. It was the worst storm I ever {see).