Society cannot share a common communication system so long as it is split into warring factions.

It’s all right to hesitate if you then go ahead.

Things take indeed a wondrous turn When learned men do stoop to learn.

There are a few things that'll move people to pity, a few, but the trouble is, when they've been used several times, they no longer work.

Never believe on faith, see for yourself! What you yourself don't learn you don't know.

For time flows on, and if it did not, it would be a bad prospect for those who do not sit at golden tables. Methods become exhausted; stimuli no longer work. New problems appear and demand new methods. Reality changes; in order to represent it, modes of representation must also change. Nothing comes from nothing; the new comes from the old, but that is why it is new.

You have to attack once the truth is too weak to defend itself.