Innovation is not the product of logical thought, even though the final product is tied to a logical structure.

I live in that solitude which is painful in youth, but delicious in the years of maturity.

If the believers of the present-day religions would earnestly try to think and act in the spirit of the founders of these religions then no hostility on the basis of religion would exist among the followers of the different faiths. Even the conflicts and the realm of religion would be exposed as insignificant.

I am strongly drawn to the simple life and am often oppressed by the feeling that I am engrossing an unnecessary amount of the labour of my fellow men. I regard class differences as contrary to justice and, in the last resort, based on force. I also consider that plain living is good for everybody, physically and mentally.

Science will stagnate if it is made to serve practical goals.

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

Great spirits often meet violent oppisition with mediocre minds.