Plato is my friend — Aristotle is my friend — but my greatest friend is truth.
Truth is ever to be found in simplicity, and not in the multiplicity and confusion of things.
To every action there is always opposed an equal reaction.
The predictions of things to come relate to the state of the Church in all ages…
The errors are not in the art, but in the artificers.
If I have seen further it is by standing on ye sholders of Giants.
God created everything by number, weight and measure.
When a man is taken in a mystical sense, his qualities are often signified by his actions, and by the circumstances of things about him.
What goes up must come down.
We are to admit no more causes of natural things than such as are both true and sufficient to explain their appearances.
To explain all nature is too difficult a task for any one man or even for any one age.
In default of any other proof, the thumb would convince me of the existence of a God.