A complacent satisfaction with present knowledge is the chief bar to the pursuit of knowledge. Basil Liddell Hart
I hate to see complacency prevail in our lives when it’s so directly contrary to the teaching of Christ. Jimmy Carter
Plato calls complacency the companion of loneliness. Franz Grillparzer
Complacency is a state of mind that exists only in retrospective: it has to be shattered before being ascertained. Vladimir Nabokov
The great enemy of intelligence is complacency. John Dos Passos