Being alive is a mystery

I am the riddle of the ages

The mystery that none can solve

I am the key to many pages

The lock that none can ever evolve

I am the voice of silent reason

The whisper that you cannot hear

I am the source of endless treason

The secret that you always fear

I am the flame of hidden passion

The spark that you cannot ignite

I am the cause of your compassion

The darkness that you cannot fight

I am the puzzle of your being

The answer that you seek in vain

I am the vision of your seeing

The question that remains the same

Who am I?