Willow and Oak

Essence is the same.
I am me, and you are you.
That will always be the case?
Willows grow up into Oaks…
Their spirits do not alter,
But they are changed.
Atoms move around,
Learning happens – copiously,
Gradually, and suddenly,
In a myriad of ways.
A Willow is a Willow.
Is it now an Oak,
Because it’s grown,
Up in wisdom’s roots?
Is a sapling Oak still wise?
There’s wisdom in the Willow,
And wind whispers to all.
Movement, sight and sense.
Wisdom, visions, thoughts.
One becomes and one is gone?
All is all is all?