He is interested in the fleeting nature of clouds.

At this point in the story, her character has just realized the fleeting nature of fame.

It had also brought him closer to Vala than was probably wise, considering the fleeting and intense nature of human lives.

During his trip across town he had time to contemplate the fleeting nature of power.

It was a powerful reminder of the fragile and fleeting nature of life.

If only they all hadn't been so unbearably aware of the fleeting nature of time.

She praises her granddaughter and remembers true love's fleeting nature.

But the fleeting nature of desire also means wish list shopping can backfire.

Unlike heterosexual relations, which are always of a fleeting nature, the relationships between males may last for years.

Because most people have one, even if only of a fleeting sexual nature.