In the Alter of Slobadka you can see this in I think the first or second chapter of the book of his collected writings.
The Chafetz Chaim said this on the verse והלכת בדרכיו ותשמור מצוותיו. First walk in his ways (which we know that means "Just like he compassionate so too must you be compassionate.") and then keep his mitzvot.
Shalom Sharabi gives a deep explanation of this in his book the נהר שלום: We know the Torah and mitzvot are compared to clothing and bread and wine. The Torah is drink and food of the soul. The mitzvot are the clothing of the soul. So then what is the soul? It is one character traits--the מידות. And that is the meaning of the verse חסרון לא יוכל להמנות what is lacking can't be filled. We can do repentance on lack of Torah and miztvot. But we can't repent on the lack of a good character trait because that is like the soul is lacking a limb. It can't be replaced.
This was the idea of Israel Salanter [the Musar Movement]--that Torah has these two aspects and I think he saw that too many people sacrifice one aspect for the sake of the other.
I think that my father and mother were better at the between man and one's fellow man than anyone I have heard of. But they did not talk about it. And they did did not advertise it. Nor did they preach it. They just did it and by their actions showed me an example of human greatness that I have not seen surpassed or even heard of anyone that has done better. Thought when it comes to other aspects of Torah I have great respect for people that were able to learn and and pray. But as far as keeping the Torah as a whole--not just some parts and ignore the rest-I think my parents were beyond anything I have heard of or seen.