Plutarch, The Life of Cato the Younger 18

Moreover, the multitude were captivated by his continuous and unwearied attention to his duties. For no one of his colleagues came up to the treasury earlier than Cato, and none left it later. 

Besides, no session of assembly or senate would he fail to attend, since he feared and kept close watch on those who were ready to gratify people by voting remissions of debts and taxes, or promiscuous gifts. And so by exhibiting a treasury which was inaccessible to public informers and free from their taint, but full of money, he taught men that a state can be rich without wronging its citizens. 

At first some of his colleagues thought him obnoxious and troublesome, but afterwards they were well pleased with him, since he took upon his own shoulders exclusively the burden of the hatreds arising from refusal to give away the public moneys or to make unjust decisions, and furnished them with a defense against people who tried to force requests upon them. They would say, namely, "It is impossible; Cato will not consent." 

On the last day of his term of office, after he had been escorted to his house by almost the whole body of citizens, he heard that many friends of Marcellus and men of influence had closely beset him in the treasury, and were trying to force him to register some remission of moneys due. 

Now, Marcellus had been a friend of Cato from boyhood, and when associated with him had been a most excellent magistrate. When acting by himself, however, he was led by a feeling of deference to be complaisant towards suppliants, and was inclined to grant every favor. 

At once, then, Cato turned back, and when he found that Marcellus had been forced to register the remission, he asked for the tablets and erased the entry, while Marcellus himself stood by and said nothing. After this had been done, Cato conducted Marcellus away from the treasury and brought him to his house, and Marcellus had no word of blame for him either then or afterwards, but continued his intimate friendship up to the end. 

However, not even after he had laid down the quaestor­ship did Cato leave the treasury destitute of his watchful care, but slaves of his were there every day copying the transactions, and he himself paid five talents for books containing accounts of the public business from the times of Sulla down to his own quaestor­ship, and always had them in hand. 

IMAGE: Canaletto, Rome: Ruins of the Forum, Looking toward the Capitol (1742)