Malicious acts are performed ...

Malicious acts are performed by people for personal gain … Sorcerers, though, have an ulterior purpose for their acts, which has nothing to do with personal gain. The fact that they enjoy their acts does not count as gain. Rather, it is a condition of their character. The average man acts only if there is a chance for profit. Warriors say they act not for profit but for the spirit.
Malicious acts are performed by people for personal gain … Sorcerers, though, have an ulterior purpose for their acts, which has nothing to do with personal gain. The fact that they enjoy their acts does not count as gain. Rather, it is a condition of their character. The average man acts only if there is a chance for profit. Warriors say they act not for profit but for the spirit.

Quotes from the same author

The trick is in what one emphasizes. We either make ourselves miserable, or we make ourselves happy. The amount of work is the same.
“We choose whether to be warriors or to be ordinary.”
“A warrior seeks to act rather than talk.”
“A warrior lives by acting, not by thinking about acting, nor by thinking about what he will think he has finished acting.”
“A warrior never worries about his fear.”