The end of all wisdom is love, love, love.
Sense-perceptions can only be indirect knowledge, and not direct knowledge. Only one's own awareness is direct knowledge.
When the mind is left without anything to cling to, it becomes still.
Realization consists of getting rid of the false idea that one is not realized.
Without knowing the Knower, all the knowledge that one gathers cannot be valid.
If the mind falls asleep, awaken it. Then if it starts wandering, make it quiet. If you reach the state where there is neither sleep nor movement of mind, stay still in that, the natural (real) state.