If I had it [life] to do all over again, I'd have been a plumber.

Ethical axioms are found and tested not very differently from the axioms of science. Truth is what stands the test of experience.

There will come a point in everyone's life , however, where only intuition can make the leap ahead, without ever knowing precisely how. One can never know why but one must accept intuition as a fact.

[Freud's] sense of reality is less clouded by wishful thinking than is the case with other people and [he combines] the qualities of critical judgment, earnestness and responsibility.

Experts are just trained dogs.

Curiosity is its own reason.

All these constructions and the laws connecting them can be arrived at by the principle of looking for the mathematically simplest concepts and the link between them.