Judaism is not complete without Christianity and without Judaism, Christianity would not exist.

Novelty is an essential attribute of the beautiful.

Ignorance never settles a question.

The profound thinker always suspects that he is superficial.

What are the most brilliant of our chymical discoveries compared with the invention of fire and the metals?

No government can be long secure without a formidable opposition. It reduces their supporters to that tractable number which can be managed by the joint influences of fruition and hope. It offers vengeance to the discontented, and distinction to the ambitious; and employs the energies of aspiring spirits, who otherwise may prove traitors in a division or assassins in a debate.

Had it not been for you, I should have remained what I was when we first met, a prejudiced, narrow-minded being, with contracted sympathies and false knowledge, wasting my life on obsolete trifles, and utterly insensible to the privilege of living in this wondrous age of change and progress.