उतिष्ठत। जाग्रत। प्राप्य वरान्निबोधत।
[Arise. Awake. And stop not till the goal is reached.]
उठो। जागो। और तब तक नहीं रुकनाजब तक कि लक्ष्य हासिल न हो।
आत्मानं सततं रक्षेत्।
One must save oneself under any circumstances.
Source – Swami Vivekananda in a letter to Sj. Balaram Bose (5th January 1890)
सर्वशास्त्रपुराणेषु ब्यासस्य वचनं ध्रुवम्।
परोपकारः पुण्याय पापाय परपीडनम्॥
Amidst all the scriptures and Puranas, know this statement of Vyasa to be true, that doing good to others conduces to merit, and doing harm to others leads to sin.
Source – Swami Vivekananda in a letter to RamKrishnananda (19th March 1894)
सत्यमेव जयते नानृतं सत्येन पन्था विततो देवयानः।
Truth alone triumphs, not falsehood.
Through Truth lies Devayâna, the path of gods
Source – Mundaka, III. i. 6
दरिद्रदेवो भव, मुर्खदेवो भव
The poor, the illiterate, the ignorant, the afflicted — let these be your God
Source – Swami Vivekananda in his letter to Akhandananda in April 1894.
From the quotes, it is clear that Swami Vivekananda did a deep study of Vedic literature and scriptures. His understanding and application of these texts were immaculate and precise.