In the quote from Paul Bowles' "The Sheltering Sky," the idea that the uncertainty of our mortality allows us to perceive life as an endless source of experiences is emphasized. This perception encourages us to engage with life fully, believing that there is always more to come. This optimism can inspire a sense of freedom and adventure.

However, Bowles also reminds us that life's experiences are limited and finite. Despite our belief in an infinite well of opportunities, each moment and event is unique and occurs only a few times. This contrast highlights the importance of cherishing our experiences and recognizing the true value of every moment.