Ardent is specifically described in SN16.2:
- How is one ardent:
"And how, friend, is one ardent?
Here, friend, a bhikkhu arouses ardour by thinking: ‘If unarisen evil unwholesome states arise in me, this may lead to my harm’; and by thinking: ‘If evil unwholesome states that have arisen in me are not abandoned, this may lead to my harm’; and by thinking: ‘If unarisen wholesome states do not arise in me, this may lead to my harm’; and by thinking: ‘If wholesome states that have arisen in me cease, this may lead to my harm.’ Thus he is ardent.”
- How is one NOT ardent
“Here, friend, a bhikkhu does not arouse ardour by thinking: ‘If unarisen evil unwholesome states arise in me, this may lead to my harm’; nor by thinking: ‘If evil unwholesome states that have arisen in me are not abandoned, this may lead to my harm’; nor by thinking: ‘If unarisen wholesome states do not arise in me, this may lead to my harm’; nor by thinking: ‘If wholesome states that have arisen in me cease, this may lead to my harm.’ Thus he is not ardent.”
This is directly related to right effort, i.e. the four right strivings (SN49.1, SN49.35 or SN49.54):
“What four?
Here, bhikkhus, a bhikkhus generates desire for the nonarising of unarisen evil unwholesome states; he makes an effort, arouses energy, applies his mind, and strives. He generates desire for the abandoning of arisen evil unwholesome states; he makes an effort, arouses energy, applies his mind, and strives. He generates desire for the arising of unarisen wholesome states; he makes an effort, arouses energy, applies his mind, and strives. He generates desire for the maintenance of arisen wholesome states, for their nondecay, increase, expansion, and fulfilment by development; he makes an effort, arouses energy, applies his mind, and strives. These are the four right strivings.”
This also fits neatly with the 7 factors of enlightenment (SN46.3):
- #1 Mindfulness allows:
- #2 Discrimination of states (kusala vs akusala dhamma) leads to or implies:
- #3 Energy
Dwelling thus mindfully, he discriminates that Dhamma with wisdom, examines it, makes an investigation of it. […] While he discriminates that Dhamma with wisdom, examines it, makes an investigation of it, his energy is aroused without slackening.
So for me, ardent in “ardent, alert, and mindful” is a reference to the effort one’s make to abandon unwholesome qualities and cultivate good ones. Outside meditation, it might means the use of real physical effort (like getting out of bed to be ‘devoted to wakefulness’ and not slothful). In meditation, I interpret it as a more subtle effort applied to my mental states (like maintaing awareness and not drifting into day-dreaming; consciously relaxing my muscles etc).
But I am uncertain about something though… An effort is something we can control with an act of will; while energy is not controlable by an act of will (at least not for me), it is something we have or don’t have and we can only control the conditions for its arising (food, sleeping habits, etc).
So does the Buddha 1) implies that thinking about the harm induced by an akusala dhamma is the cause for the arousal of energy within oneself OR 2) suggests that this thinking should motivate us to make an effort/arouse energy?
Based on my personal experience I would go for option 2 for now, but the texts seem to imply option 1. Any thoughts?