Ajahn Chah

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.

Here we take up the thinking to investigate it.

It's not that we're aimlessly thinking or imagining a way.

It's something that arises from a peaceful mind.

This is called awareness within calm and calm within awareness.

If it's simply ordinary thinking and imagining, the mind won't be peaceful.

It will be disturbed.

But I'm not talking about ordinary thinking.

This is a feeling that arises from a peaceful mind.

It's called contemplation.

Wisdom is born right here.

So there can be right samadhi and wrong samadhi.

Wrong Samadhi is when the mind enters calm and there's no awareness at all.

One could sit for two hours or even all day, but the mind doesn't know where it's been or what's happened.

It doesn't know anything.