For wisdom — to awaken our “inner treasure” — we need sharpness (analytical meditation) and steadiness (single-pointed concentration meditation) for it to be fruitful.

Namely samatha (शमथ, Tib. ཞི་གནས་) and vipassanā (विपश्यना, Tib. ལྷག་མཐོང་). A doctor can be very wise, but if he is not focused, it’s not effective! Just like a candle light: bright (stronger light) and stable (no flickering).

Therefore, the two attitudes needed to grow wisdom: mindfulness (དྲན་པ་) — remembering the object, staying present — and introspection (ཤེས་བཞིན་) — monitoring, checking if you wandered. These two decides how grounded you are in what you do and your thinking.

There are three levels to mindfulness and introspection: one to manage physical actions, one for verbal actions and one for mental actions.

The training of mindfulness and introspection to manage physical and verbal actions → discipline.
The harder is the training of mindfulness and introspection to manage mental actions.

QualityTraining Required
steadinessmorality (śīla, शील, Tib. ཚུལ་ཁྲིམས་) and meditative concentration (samādhi, Skt. समाधि Tib. ཏིང་ངེ་འཛིན་)
brightnesswisdom (prajñā, प्रज्ञा, Tib. ཤེས་རབ་)

So these trainings are split into 3 baskets (Tipiṭaka, त्रिपिटक, Tib. སྡེ་སྣོད་གསུམ་), three sets of teachings:

TrainingBasket (Piṭaka)
MoralityVinaya
Meditative ConcentrationSutta
WisdomAbhidhamma