Except God no substance can be granted or conceived. .. Everything, I say, is in God, and all things which are made, are made by the laws of the infinite nature of God, and necessarily follows from the necessity of his essence.

Men are especially intolerant of serving and being ruled by, their equals.

I call him free who is led solely by reason.

The safest way for a state is to lay down the rule that religion is comprised solely in the exercise of charity and justice, and that the rights of rulers in sacred, no less than in secular matters, should merely have to do with actions, but that every man should think what he likes and say what he thinks.

No one doubts but that we imagine time from the very fact that we imagine other bodies to be moved slower or faster or equally fast. We are accustomed to determine duration by the aid of some measure of motion.

Whatever increases, decreases, limits or extends the body's power of action, increases decreases, limits, or extends the mind's power of action. And whatever increases, decreases, limits, or extends the mind's power of action, also increases, decreases, limits, or extends the body's power of action.

Nature has no goal in view, and final causes are only human imaginings.