When a truth is necessary, the reason for it can be found by analysis, that is, by resolving it into simpler ideas and truths until the primary ones are reached. It is this way that in mathematics speculative theorems and practical canons are reduced by analysis to definitions, axioms and postulates.

For since it is impossible for a created monad to have a physical influence on the inner nature of another, this is the only way in which one can be dependent on another.

It's easier to be original and foolish than original and wise.

Make me the the master of education, and I will undertake to change the world.

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

To love is to take delight in happiness of another, or, what amounts to the same thing, it is to account another's happiness as one's own.

There is a world of created beings - living things, animals, entelechies, and souls - in the least part of matter.... Thus there is nothing waste, nothing sterile, nothing dead in the universe; no chaos, no confusions, save in appearance.