We are alone when we feel we have nothing to give to the world.
Many have wealth and material goods, and even donate part of their wealth, but they are still lonely.
This is because material goods are temporary, replaceable, and meaningless. Giving such things does bring practical utility to the receiver, but the giver remains in solitude.
In truth, we own nothing and have nothing to give.
This existence, this life, all life,
The flower needs the bee, the bee needs the flower.
We are alone when we do not share.
We do not share what we have, but what we are.