The Dharma Path is to keep walking forward. But the true Dharma has no going forward, no going backward, and no standing still.
-Ajahn Chah, “Still Forest Pool”

Just as a monkey roaming through the forest grabs hold of one branch, lets that go and grabs another, then lets go and grabs still another, so too that which is called “mind” and “mentality” and “consciousness” arises as one thing and ceases as another by day and by night.
-Buddha, “The Connected Discourses of the Buddha”

One sees pleasure as suffering
And sees pain as a dart.
One sees as impermanent the peaceful feeling
That is neither pleasant nor painful.

Such a bhikkhu who sees rightly
Is thereby well released.
Accomplished in knowledge, at peace,
That sage has overcome all bonds.
- Itivuttaka

If there’s no wound on the hand,
that hand can hold poison.
Poison won’t penetrate
where there’s no wound.
There’s no evil
for those who don’t do it.
- Dhammapada [9]

Take heed that when effort is too strenuous it leads to strain and when too slack to laziness. So make a firm determination that you will adopt the middle way, not allowing yourself to struggle or to slacken, but recognizing that faith, energy, mindfulness, concentration, and wisdom are the fruits of a calm and equable way.
- Theragatha

The person who tells a lie,
who transgresses in this one thing,
transcending concern for the world beyond:
there’s no evil
he might not do.
- Dhammapada [176]