Consciousness of myself, combined with complete ignorance of everything that does not fall within my sphere of thinking, is the most telling proof of my substantiality outside God, of my original existence.

Judaism boasts of no exclusive revelation of eternal truths that are indispensable to salvation, of no revealed religion in the sense in which that term is usually understood.

The principal axiom in their theory was: Everything can be proved, and everything can be disproved; and in the process, one must profit as much from the folly of others, and from his own superiority, as he can.

I am, therefore there is a God.

The Jew is not the one who has been born into the faith, but the one who has learned to respect and understand it.

Instead, it appears to be a particular mark of beauty that it is considered with tranquil satisfaction; that it pleases if we also do not possess it and we are still far removed from demanding to possess it.

We would be able neither to remember nor to reflect nor to compare nor to think, indeed, we would not even be the person who we were a moment ago, if our concepts were divided among many and were not to be encountered somewhere together in their most exact combination.

I fear that, in the end, the famous debate among materialists, idealists, and dualists amounts to a merely verbal dispute that is more a matter for the linguist than for the speculative philosopher.

The state has physical power and uses it when necessary; the power of religion is love and beneficence.

A God is thinkable, therefore a God is also actually present.