Nature by itself is a book which a soul reads.
If faith in ourselves had been more extensively taught and practiced, I am sure a very large portion of the evils and miseries that we have would have vanished.
You have to grow from the inside out. None can teach you, none can make you spiritual. There is no other teacher but your own soul.
All the powers in the universe are already ours. It is we who have put our hands before our eyes and cry that it is dark.