No public character has ever stood the revelation of private utterance and correspondence.

At all times sincere friends of freedom have been rare, and its triumphs have been due to minorities.

Be not content with the best book; seek sidelights from the others; have no favourites.

There are two things which cannot be attacked in front: ignorance and narrow-mindedness. They can only be shaken by the simple development of the contrary qualities. They will not bear discussion.

History provides neither compensation for suffering nor penalties for wrong.

It is they [men of science] who hold the secret of the mysterious property of the mind by which error ministers to truth, and truth slowly but irrevocably prevails. Theirs is the logic of discovery, the demonstration of the advance of knowledge and the development of ideas, which as the earthly wants and passions of men remain almost unchanged, are the charter of progress, and the vital spark in history.

The man who prefers his country before any other duty shows the same spirit as the man who surrenders every right to the state. They both deny that right is superior to authority.