Much can be inferred about a man from his mistress: in her one beholds his weaknesses and his dreams.

I made the journey to knowledge like dogs who go for walks with their masters, a hundred times forward and backward over the same territory; and when I arrived I was tired.

Libraries can in general be too narrow or too wide for the soul.

Doubt must be no more than vigilance, otherwise it can become dangerous.

If another Messiah was born he could hardly do so much good as the printing-press.

We are obliged to regard many of our original minds as crazy at least until we have become as clever as they are.

What most clearly characterizes true freedom and its true employment is its misemployment.