Man is by nature a political animal.

At his best man is the noblest of all animals; separated from law and justice he is the worst

I say that habit's but a long practice, friend, And this becomes men's nature in the end

Man, when perfected, is the best of animals, but when separated from law and justice, he is the worst of all.

Man is the only animal capable of reasoning, though many others possess the faculty of memory and instruction in common with him.

The search for truth is in one way hard and in another way easy, for it is evident that no one can master it fully or miss it wholly. But each adds a little to our knowledge of nature, and from all the facts assembled there arises a certain grandeur.