God makes nothing without order, and everything that forms itself develops imperceptibly out of small parts.

A great doctor kills more people than a great general.

Take what you need, do what you should, you will get what you want.

Now this connection or adaption of all created things with each, and of each with all the rest, means that each simple substance has relations which express all the others, and that consequently it is a perpetual living mirror of the universe.

Now, as there is an infinity of possible universes in the Ideas of God, and as only one of them can exist, there must be a sufficient reason for God's choice, which determines him toward one rather than another. And this reason can be found only in the fitness, or the degrees of perfection, that these worlds contain, since each possible thing has the right to claim existence in proportion to the perfection it involves.

What is is what must be.

Philosophy consists mostly of kicking up a lot of dust and then complaining that you can't see anything.