The more reusable code is, the less usable it is.

— Neal Ford, Rebecca Parsons, and Patrick Kua, Building Evolutionary Architectures

…the best flying team has three components: a pilot, a computer and a dog. The computer is there to fly the plane, the pilot is there to feed the dog. And the dog is there to bite the human if it tries to touch the computer.

— Hannah Fry, Hello World

Gerald Weinberg points out that marketers tend to be 10 years older and negotiate for a living—that is, they tend to be seasoned, professional negotiators (Weinberg 1994). The deck is stacked against developers during schedule negotiations.

— Steve McConnell, Rapid Development

Karl Weierstrass once said that a mathematician who is not a bit of a poet will never be a good mathematician.

— Haim Shapira, Eight Lessons on Infinity

The vast majority (90% or more) of programmers have absolutely no idea what they are doing.

— Max Kanat-Alexander, Understanding Software