As for the first, as said in Sutra,
O bikshus! One who sees interdependent origination sees the Dharma!
One who sees the Dharma sees the Tathagata, the Buddha.
And Je Tsongkhapa said in his Praise of Interdependent Origination,
By reason of seeing your peerless teaching
of interdependent origination
Certainty is developed in the validity
of your other teachings.
For many other purposes you explained it well.
In following after you,
All degeneration fades far away
Because the root of all faults is stopped.
As said, the principal cause for us to wander in samsara is ignorance. Ignorance is the root of all the delusions. So, if it can be eliminated, all delusions are eliminated. For example, if a tree is cut down from the root, its branches and leaves are also naturally all cut down as well.
Excerpt of text written by Khenpo Karten Rinpoche “Essence of Buddhism As Related to the Four Noble Truths,” a teaching which includes an explanation of the 12 Links of Dependent Origination.
