Nothing replaces firsthand experience of Reality.
This experience is gained through observation of everything inside and outside.
If the observation is sincere, then a great realisation happens.
Once the great realization is pure enough, the universe reveals itself in the form of a Revelation.
This revelation is timeless and always the same.
This is the ultimate truth. The absolute oneness of everything is experienced by the seeker and the identity is no more relevant for existence.
The seeker is free at last, for having seen and experienced reality as it is and not as a projection of our mind or body.
Theosophy does not say: Thou Shalt. Theosophy does not say: Thou shalt not. Theosophy says: Look. Consider, Weigh. Determine.