David Deutsch

A theory that is not refutable by any conceivable event is non-scientific.

The beginning of infinity is the point at which we become aware of the infinite possibilities of knowledge.

We can solve problems, but we can also change the problems we choose to solve.

Understanding is the foundation of all human achievement.

Problems are inevitable, but solutions are not.

The pursuit of knowledge is what drives progress.

Science is not a body of knowledge; it is a way of thinking.

The search for truth is more important than the certainty of belief.

Human creativity is the driving force behind progress.

Problems are inevitable, but solutions are always possible.