Look into the nature of doubt:
isn´t it like the nature of certainty?
Who is this one who doubts?
isn´t it the same one that feels certain?
When doubt shows up, let it pass:
it is just one form of clarity.
When certainty arises, let it go:
it is just another form of clarity.
If there was no doubt,
there would be no certainty.
Do not refuse the doubting mind;
do not cling to the certain mind.
6 months ago