Peter Kropotkin was surely on the left. He was one of the founders of what is now called 'sociobiology' or 'evolutionary psychology' with his book Mutual Aid, arguing that human nature had evolved in ways conducive to the communitarian anarchism that he espoused.

I like the cold weather. It means you get work done.

It is a privilege to join the campaign to support Bradley Manning for his courage and integrity in serving his country by helping make the government accountable to its citizens, and to inform the world of what its people should know.

Like other organisms, humans have a certain genetic endowment (apparently varying little in the species, not a surprise considering its recent separation from other hominids). That determines what we call their nature.

You know, you can go to the fiftieth thing on a Google list and that's the one you want, but the ones you are going to be directed to are the funders.

In the case of [Antonio] Gramsci, the Fascist government agreed that he was a "model intellectual" in [Edward] Said's sense, and for that reason determined, in their words, that "we must stop this brain from functioning for twenty years."

Suppose that, say, China established military bases in Colombia to carry out chemical warfare in Kentucky and North Carolina to destroy this lethal crop [tobacco] that is killing huge numbers of Chinese.