Quotes from William of Ockham

It is vain to do with more what can be done with less.

God's existence cannot be deduced by reason alone.

Entities should not be posited unnecessarily.

With all things being equal, the simplest explanation tends to be the right one.

Entities should not be multiplied beyond necessity.

All things being equal, the simplest solution tends to be the best one.

Keep things simple.

It is futile to do with more what can be done with fewer.

Entia non sunt multiplicanda praeter necessitatem.

Pluralitas non est ponenda sine neccesitate. (Entities should not be multiplied unnecessarily.)

Numquam ponenda est pluralitas sine necessitate [Plurality must never be posited without necessity]

Plurality is never to be posited without necessity.

It is futile to do with more things, that which can be done with less.

Frustra fit per plura quod potest fieri per pauciora [It is futile to do with more things that which can be done with fewer]

et tamen nihil est sciens vel quiescens, nisi actualiter sit sciens vel quiescens.

It is vain to do with more what can be done with less.

Plurality should not be assumed without necessity

Omnis homo praeter Sortem currit, igitur Plato currit et sic de aliis a Sorte.

For nothing ought to be posited without a reason given, unless it is self-evident (literally, known through itself) or known by experience or proved by the authority of Sacred Scripture.