If you want to kill Christianity you must abolish Sunday.

When his highness sends a ship to Egypt, does he trouble his head whether the mice on board are at their ease or not?

The adjective is the enemy of the noun. Variant: The adjective is the enemy of the substantive.

It is proved...that things cannot be other than they are, for since everything was made for a purpose, it follows that everything is made for the best purpose.

Of all religions, the Christian should of course inspire the most tolerance, but until now Christians have been the most intolerant of all men.

All sects are different, because they come from men; morality is everywhere the same, because it comes from God.

It would be very singular that all nature, all the planets, should obey eternal laws, and that there should be a little animal five feet high, who, in contempt of these laws, could act as he pleased, solely according to his caprice.