No idea is conceived in our mind independent of our five senses [i.e., no idea is divinely inspired].
Out of the clutter find Simplicity
There is no greater satisfaction for a just and well-meaning person than the knowledge that he has devoted his best energies to the service of the good cause.
We shall require a substantially new manner of thinking if mankind is to survive.
If you can't explain it simply, you don't understand it well enough.
Politics is a pendulum whose swings between anarchy and tyranny are fueled by perennially rejuvenated illusions.