So if loss of what gives happiness causes you distress when it fades, you can now understand that such happiness is worthless. It is said, those who lose themselves in their desire for things also lose their innate nature by being vulgar.
ZhuangziAll that is limited by form, semblance, sound, color is called object. Among them all, man alone is more than an object. Though, like objects, he has form and semblance, He is not limited to form. He is more. He can attain to formlessness. When he is beyond form and semblance, beyond "this" and "that," where is the comparison with another object? Where is the conflict? What can stand in his way? He will rest in his eternal place which is no-place. He will be hidden in his own unfathomable secret. His nature sinks to its root in the One. His vitality, his power hide in secret Tao.
ZhuangziThe sage embraces things. Ordinary men discriminate amongst them and parade their discriminations before others. So I say; those who discriminate, fail to see.
ZhuangziHe who dreams ... does not know he is dreaming... . Only when he awakens does he know he has dreamt. But there is also the great awakening (ta-chiao), and then we see that [everything] here is nothing but a great dream. Of course, the fools believe that they are already awake-what foolishness! Confucius and you, both of you, are dreams; and I, who tell you this, am also a dream.
Zhuangzi