The exact phrase, yes, but I read "Temper the fighter, not the sword" here: [0].

The general observation that either the tool or the operator can be improved in an operator-tool system is semi-regularly invoked in discussions of new programming languages/EDC multi-tools/governance models within my conversational circles.

[0] https://www.reddit.com/r/systema/comments/3lcn5q/systema_lin...