Men are microcosms, or little worlds; each man has his distinct sphere, wherein he dwells apart. We are so many worlds, and no one world of man exactly overlaps another. You cannot completely know your fellowman.

Man as a microcosm contains everything that exists in the macrocosm.

It is true: Man is the microcosm: I am my world.

Man is a universe within himself.

It is too little to call man a little world, except God, man is a diminutive to nothing. Man consists of more pieces, more parts, than the world; than the world doth, nay, than the world is.

...but also perhaps you sometimes delight in consideration of the most perfectly constructed of all creatures, and take delight in considering the temporary lodging and instrument of the immortal soul, a dwelling that in many respects corresponds to the universe and for that reason was called the little universe [microcosmos] by the ancients.

We human beings are macroscopic structures in a universe whose laws reside at a microscopic level. As survival-seeking beings, we are driven to seek efficient explanations that make reference only to entities at our own level. We therefore draw conceptual boundaries around entities that we easily perceive, and in so doing we carve out what seems to us to be reality.

There is no man alone, because every man is a Microcosm, and carries the whole world about him.

Our world is made up of a myriad of microcosms, of tiny worlds, each with its own habitues, every one known to the others.

Everything is governed by one law. A human being is a microcosmos, i.e. the laws prevailing in the cosmos also operate in the minutest space of the human being.

Man... About the Body ~Man is the true image of God; he has been created in the likeness of the universe. Everything great to be found in the universe is reflected, I a small degree, in man. For this reason, man is signified as a microcosm in contrast to the macrocosm of the universe. Strictly speaking, the entire nature manifests itself in man and it will be the task of this chapter to inform about these problems...

We cannot fathom the marvelous complexity of an organic being; but on the hypothesis here advanced this complexity is much increased. Each living creature must be looked at as a microcosm — a little universe, formed of a host of self-propagating organisms, inconceivably minute and as numerous as the stars in heaven.

Man is a piece of the universe made alive

Translation: Man, in a word, is a world in miniature, and the most perfect and most finished work of God.