Narendranath as a growing youth.

About this time Narendra was urged by his father to marry, and an opportunity soon presented itself. A wealthy man, whose daughter Narendra was asked to accept as his bride, offered to defray his expenses for higher studies in England so that he might qualify himself for the much coveted Indian Civil Service. Narendra refused.Other proposal for similar nature produced no different result. Apparantly it was not his destiny to lead a family life.
Since boyhood Narendra had shown a passion for purity. Whenever his warm and youthful nature tempted him to walk into a questionable adventure, he was held back by an unseen hand.His mother had taught him the value of chastity and had made him observe it as a matter of honour, in loyalty to herself and the family tradition .But purity to Narendra was not a negative virtue , a mere abstention from carnal pleasures. To be pure, he felt, was to conserve an immense spiritual force that would later manifest itself in all the noble aspirations of life.He regarded himself as a brahmcharin, a celibate student of the Hindu tradition, who worked hard, prized ascetic disciples, held holy things in reverence, and enjoyed clean  words, thoughts, and acts. For according to the Hindu scriptures, a man, by means of purity, which is the greatest of all virtues, can experience the subtlest spiritual perceptions . Naren  accounted for the greatest power of concentration, memory, and insight, and for his indomitable mental energy and physical stigma.    

Aggressive Goodness

A characteristic of Narendranath was his solicitude for others. For instance, it was customary in those days for the General Assembly's Institution to help those who, for lack of funds, could not pay the required fees; there was also provision for exemption from college dues in special cases. But the need of an applicant for funds or for exemption had to be substantiated before his name could be put on the free list. Rajkumar, a senior clerk, was in charge of making decisions in such matters. Now, it so happened that Haridas Chattopadhyaya, a classmate of Narendranath, was in great financial difficulty before the examination. He could not pay the accumulated college dues, nor was it easy for him to pay the examination fees. Narendranath assured his friend that he would see what could be done. 

After one or two days, when a crowd of students had assembled at the counter in Rajkumar's office to deposit dues and fees, Narendranath made his way through the crowd and said to Rajkumar, "Sir, Haridas is incapable of paying his dues. Will you kindly exempt him? If you send him up for the examination he will pass with credit; otherwise he will be undone." "Your presumptuous recommendation is uncalled for", said Rajkumar; "you had better 'oil your own machine'! I won't send him up unless he pays his dues." Thus rebuffed Narendranath left the place, and his friend was naturally disappointed. But Narendranath consoled him saying, "Why are you giving way to despair? The old man is in the habit of giving such rebuffs. I tell you, I shall find a way out for you; so be at rest." 

After college hours, instead of returning home, Narendranath searched out the opium-smoking den to which Rajkumar usually resorted. As the darkness of the evening gathered, sure enough, Rajkumar was espied stealthily advancing towards the den. With surprising suddenness Narendranath presented himself before the old man and stood in his way. Rajkumar, though puzzled at the sight of Narendranath at such a place and time, kept his nerve and said as calmly as he could, "What's the matter, Datta? You are here!" Narendranath again presented his plea on behalf of Haridas, and added that, if the request were ignored, he would publicize in the college Rajkumar's frequenting the opium-smoking den. "Well, my dear, why are you so angry?" said the old man: "What you want will be done. Can I ever ignore your request?" And he conceded that the arrears of the college dues of Haridas would be remitted, but he would be required to pay the examination fees. Narendranath agreed to this and took leave of him. 

Early next morning, before sunrise, Narendranath went to Haridas's house and after knocking at the door sang the song:

In this pure pellucid dawn,
Meditate on Brahman of incomparable glory.
Behold the newly risen sun,
The light of its lovely face
Showing on the mountain top.
The sweet breeze blowing on this auspicious day
Pours nectar while singing His glory.
Let us all go to the abode of God
With offerings of love in our hearts.

Then he said to Haridas, "Come, be of good cheer, your work is done. You will not have to pay the college dues." And he narrated the incident of the previous evening with all his mimicry and dramatic skill and raised a storm of laughter. 

A friend of Narendranath's refers to him in a manner that gives one an insight into the nature of the feelings that all his friends bore for him at this time: 

It was delightful to listen to him. His voice was like music to us. We would often open a subject for discussion just for the pleasure of hearing him. He was so interesting and, above all, so original. We learned much from listening to him. Did anyone oppose him, however, he would fall upon him with all his power of thought and language, and would vanquish the opponent in no time. Even in those days he detested any sort of weakness. He was a great admirer of Napoleon and tried to impress upon us that the followers of any great cause must give the unquestioning obedience which Marshal Ney showed to his emperor.