The Seal of Hashem is Truth

Once, Rav Simcha Bunim of Peshischa, zt”l, demurred before the , zt”l. “I am nothing,” he stated simply.
“Excellent!” replied the Chozeh.
“No, I don’t mean it as a kind of avodah. I mean that I am really nothing.”
“Well, it is certainly better to feel as though you are nothing from nothing than to feel that you are something from something.”
Suddenly Rav Bunim began to cry out, “Oy! But I am absolutely nothing!”
The Chozeh’s final reply assuaged Rav Bunim. “You may feel like you are nothing but at least you go in the way of Hashem. Our sages teach that the seal of Hashem is truth. If a person thinks that he achieves something on his own, he is living a lie. As our sages say, if Hashem does not help one in his daily struggle with his evil inclination, evil would prevail.”
Rav Simcha Henoch of Alexander, zt”l, explained why Hashem’s seal is specifically truth. “Why not use one of the attributes that are mentioned earlier in the grouping of His thirteen middos, such as רחום or חנון? The answer is that every other attribute can be faked, in which case it is false. A person can show mercy where it is not warranted, or be gracious inappropriately. Usually he will then be cruel when it is proper to show mercy, like our sages tell us about Shaul and Agag.
“The only attribute that cannot be falsified is truth. The reason why is obvious. If one falsifies truth, it is not truth at all!”