no supports are needed

You are asking for truth, but in fact you merely seek comfort, which you want to last for ever. Now, nothing, no state of mind, can last for ever. In time and space there is always a limit, because time and space themselves are limited. And in the timeless the words 'for ever' have no meaning. The same with the 'proof of truth'. In the realm of nonduality everything is complete, its own proof, meaning and purpose. Where all is one, no supports are needed. You imagine that permanence is the proof of truth, that what lasts longer is somehow more true. Time becomes the measure of truth. And since time is in the mind, the mind becomes the arbiter and searches within itself for the proof of truth—a task altogether impossible and hopeless!