The thinker dies, but his thoughts are beyond the reach of destruction. Men are mortal; but ideas are immortal.

Once you touch the biographies of human beings, the notion that political beliefs are logically determined collapses like a pricked balloon.

Very few established institutions, governments and constitutions ...are ever destroyed by their enemies until they have been corrupted and weakened by their friends.

The Bill of Rights does not come from the people and is not subject to change by majorities. It comes from the nature of things. It declares the inalienable rights of man not only against all government but also against the people collectively.

When everyone thinks the same, nobody is thinking.

The radical novelty of modern science lies precisely in the rejection of the belief... that the forces which move the stars and atoms are contingent upon the preferences of the human heart.

Private property was the original source of freedom. It still is its main bulwark.