We are like children building ...

We are like children building a sand castle. We embellish it with beautiful shells, bits of driftwood, and pieces of colored glass. The castle is ours, off limits to others. We’re willing to attack if others threaten to hurt it. Yet despite all our attachment, we know that the tide will inevitably come in and sweep the sand castle away. The trick is to enjoy it fully but without clinging, and when the time comes, let it dissolve back into the sea.
We are like children building a sand castle. We embellish it with beautiful shells, bits of driftwood, and pieces of colored glass. The castle is ours, off limits to others. We’re willing to attack if others threaten to hurt it. Yet despite all our attachment, we know that the tide will inevitably come in and sweep the sand castle away. The trick is to enjoy it fully but without clinging, and when the time comes, let it dissolve back into the sea.

Quotes from the same author

Nothing ever goes away until it has taught us what we need to know.
When you begin to touch your heart or let your heart be touched, you begin to discover that it's bottomless.
The truth you believe and cling to makes you unavailable to hear anything new.
The future is completely open, and we are writing it moment to moment.
The greatest obstacle to connecting with our joy is resentment.