The Silent Sages of Old : Suttas from the Suttanipāta

This small selection of Suttas is by no means comparably small in its
importance and significance. For the realization of Dhamma is beyond
any descriptive words or concepts: truth is not subject to measurement,
comparison or classification. The Buddha and his noble disciples were
skilled in the use of words as a means to guide seekers toward the very
same realization of Dhamma that they had experienced – to a liberation
from all troubles and burdens – but there is not always a need for
elaborate explanation of all that one might experience in life. Rather,
more meaningful is that which words inspire: the courage to go ‘against
the stream’ of the world, and to put aside its mundane values. To move
to silent abodes, forests or mountains, where silence and solitude
afford the space to uncover hidden weaknesses, and where there may
develop an opportunity to examine and understand the phenomena of
subjective experience at a most fundamental and universal level. In
short, the invitation implicit in these Suttas is to actually do the
work which can bear the fruit of liberation.

Aṭṭhakavagga [Sn 4]

Pārāyanavagga [Sn 5]

Muni Sutta [Sn 1:12]

SammāparibbājaniyaSutta [Sn 2:13]