Manusmriti
एकाकी चिन्तयेन्नित्यं विविक्ते हितमात्मनः । एकाकी चिन्तयानो हि परं श्रेयोऽधिगच्छति ॥ २५८ ॥
Alone let him constantly meditate in solitude on that which is salutary for his soul; for he who meditates in solitude attains supreme bliss.
english translation
ekAkI cintayennityaM vivikte hitamAtmanaH । ekAkI cintayAno hi paraM zreyo'dhigacchati ॥ 258 ॥
hk transliteration by Sanscript