The analysis of concepts is for the understanding nothing more than what the magnifying glass is for sight

My religion recognizes no obligation to resolve doubt other than through rational means; and it commands no mere faith in eternal truths

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

Revealed religion is one thing, revealed legislation, another.

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

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.

Socrates' fame spread all over Greece, and the most respected and educated men from all around came to him, in order to enjoy his friendly company and instruction.