Habituated from our Infancy to trample upon the Rights of Human Nature, every generous, every liberal Sentiment, if not extinguished, is enfeebled in our Minds.
What is government itself but the greatest of all reflections on human nature? If men were angels, no government would be necessary. If angels were to govern men, neither external nor internal controls on government would be necessary.
It's human nature to keep doing something as long as it's pleasurable and you can succeed at it - which is why the world population continues to double every 40 years.
The Greeks possessed a knowledge of human nature we seem hardly able to attain to without passing through the strengthening hibernation of a new barbarism.
Italians know about human nature - they understand human nature perhaps better than anyone else does. They know that people are weak and greedy and lazy and dishonest and they just try to make the best of it; to work around it.
There is an electric fire in human nature tending to purify - so that among these human creatures there is continually some birth of new heroism. The pity is that we must wonder at it, as we should at finding a pearl in rubbish.