[J]ust as many people... correctly worry about biodiversity, I get... emotional and upset... whenever linguistic diversity in particular, and cultural diversity in general, decreases... is threatened... [T]he history of evolution tells us that... you get interesting diversity and... life forms because of . Whenever diversity decreases and one single species or... idea or... way of doing things starts taking over, usually the world is headed for destruction. ...Monkeys that call themselves humans might do some optimization calculations... in their foolishness, and they say, "Oh, ...we have times this ...and that means we have to do it this way. Everyone should be behaving this way..." and so on... [T]hen they end up doing this and in some sense the invention of money doomed us to go in that direction. But I do believe that that way lies madness. ...[F]or me, madness means you abandoned diversity and ...everyone started running in the same direction, and that's really dangerous. So I am... a great partisan of people doing things their own cultural ways, and I don't want, for example, English to take over the entire world.

Insanity is the drug of misery.

This time I m not going to tell you a story. I'll just say that insanity is the inability to communicate your ideas. It's as if you were in a foreign country, able to see and understand everything that's going on around you but incapable of explaining what you need to know or of being helped, because you don't understand the language they speak there.

Religious fanaticism is the most dangerous form of insanity.

I became insane, with long intervals of horrible sanity.

Dictatorships, wars, and cruelty drive whole countries to madness. My theory is that the human species was crazy from the very first and that civilization and culture are only enhancing man’s insanity.
A Tale of Two Sisters

Man is the most insane species. He worships an invisible God and destroys a visible Nature. Unaware that this Nature he's destroying is this God he's worshiping.

"Seeing my daughter, the next generation in the same type of space lacking diversity, was alarming to me".

The definition of insanity is doing the same experiment and expecting different results.

Too much sanity is madness. The greatest madness of all is to see the world as it is, and not as it should be.

An intellectual hatred is the worst.

Someone has defined insanity as an inability to choose among false alternatives. In dreams we are insane. We wander across our limitless dreamscapes as madmen.

The irony was quite comprehensively hideous.

There is nothing more awful, insulting, and depressing than banality.