Buddha's Words

One who dwells diligently
In this Dhamma and Discipline,
Having abandoned the wandering on in birth,
Will make an end to suffering.” (Samyutta Nikaya)

A man may conquer a million men in battle,
but one who conquers himself is, indeed,
the greatest of conquerors. (Dhammapada, verse 103)

It is better indeed, to conquer oneself than to conquer others.
Neither a deva, nor a gandhabba, nor Mara together with Brahma
can turn into defeat the victory of the man who controls himself.
(Dhammapada, verses 104, 105.)

Better than a hundred years in the life of a person who does not perceive the arising and the dissolving of the five aggregates (khandhas),
is a day in the life of one who perceives the arising and dissolving of the five aggregates. (Dhammapada verse 113)

Better than a hundred years in the life of a person who does not perceive the Deathless (Nibbana), is a day in the life of one who perceives the Deathless (Nibbana). (Dhammapada, verse 114)

Those people who are uncontrolled in sense pleasures,
not rid of lust, enjoying sense pleasures here,
repeatedly coming back to birth and old age,
immersed in craving, are "the ones who go along with
the stream." Therefore a wise person with mindfulness established,
not resorting to sense pleasures and bad deeds,
should give up sense pleasures even if it's painful:
they call this person "one who goes against the stream."

(Anguttara Nikaya) One who is competent and self-confident,
learned, an expert on the Dhamma,
practicing in accord with the Dhamma,
is called an adornment of the Sangha.

A bhikkhu accomplished in virtue,
a learned bhikkhuni,
a male lay follower endowedj with faith,
a female lay follower endowed with faith:
these are the ones that adorn the Sangha;
these are the Sangha's adornments. (Anguttara Nikaya)

Those who are deceivers, stubborn, talkers,
imposters, haughty, unconcentrated,
do not make progress in the Dhamma
that the Perfectly Enlightened One has taught. But those who are honest and sincere,
steadfast, compliant, and well concentrated,
make progress in the Dhamma
that the Perfectly Enlightened One has taught. (Anguttara Nikaya)

When one has faith in the Tathagata,
unshakable and well-established,
and virtuous behavior that is good,
loved by the noble and praised;
when one has confidence in the Sangha
and one's view has been straightened out,
they say that one is not poor,
that one's life is not lived in vain.
Therefore an intelligent person,
remembering the Buddhas' teaching,
should be intent on faith and virtuous behavior,
confidence and vision of the Dhamma. (Anguttara Nikaya)