... one does people the best service by giving them some elevating work to do and thus indirectly elevating them.

Non-cooperation in military matters should be an essential moral principle for all true scientists.

I'm not a genius. I'm just passionately curious.

Body and soul are not two different things, but only two different ways of perceiving the same thing. Similarly, physics and psychology are only different attempts to link our experiences together by way of systematic thought.

The great need to grasp principles had caused me to spend most of my time on fruitless persuits.

Any society which does not insist upon respect for all life must necessarily decay.

As far as I'm concerned, I prefer silent vice to ostentatious virtue.