A scholar knows no boredom

काव्यशास्त्रविनोदेन
कालो गच्छति धीमताम् ।
व्यसनेन तु मूर्खाणाम्
निद्रया कलहेन वा ॥

- हितोपदेशः

An intelligent person spends his time by enjoying poetry and scientific literature. In contrast, a fool spends his time in his addiction to bad habits, laziness or in some kind of quarrel.

A scholar knows no boredom.
It is not who we are but what we do that defines us.
A habit's but a long practice, friend,
And this becomes man's nature in the end.