Ajahn Chah

The Samadhi with deep, sustained calm.

This Samadhi brings great peace.

Where there is peace, there is happiness.

Where there is happiness, attachment and clinging to that happiness arise.

The meditator does not want to contemplate anything else.

They just want to indulge in that pleasant feeling.

When we have been practicing for a long time, we may become adept at entering this samadhi very quickly.

As soon as we start to note our meditation object, the mind enters calm.

We do not want to come out to investigate anything.

We just get stuck on that happiness.

This is a danger to one who is practicing meditation.

we must use upacara samadhi, access concentration.

Here we enter calm and then when the mind is sufficiently calm, we come out and look at the outer activity of what's happening in the mind.

We must look at outer activity

the sense impressions and the effect they have on the mind.

Looking like this with a calm mind gives rise to wisdom.

This might be difficult to understand because it's almost like ordinary thinking and imagining.

When thinking is there, we might think that the mind isn't peaceful, but actually that thinking is taking place within the calm mind.

There is contemplation, but it doesn't disturb the calm.

we may bring thinking up in order to contemplate it.