Mathematics is the gate and key to science..

A man is crazy who writes a secret in any other way than one which will conceal it from the vulgar..

Cease to be ruled by dogmas and authorities; look at the world!.

The conquest of learning is achieved through the knowledge of languages..

But concerning vision alone is a separate science formed among philosophers, namely, optics, and not concerning any other sense ... It is possible th….

There are two modes of acquiring knowledge, namely by reasoning and experience. Reasoning draws a conclusion and makes us grant the conclusion, but d….

There are four great sciences, without which the other sciences cannot be known nor a knowledge of things secured ... Of these sciences the gate and ….

Vacuum stands and remains a mathematical space. A cube placed in a vacuum would not displace anything, as it would displace air or water in a space a….

The calendar is intolerable to all wisdom, the horror of all astronomy, and a laughing stock from a mathematician's point of view..

It is easier for a man to burn down his own house than to get rid of his prejudices..

Experimental science is the queen of knowledge..

For if any man who never saw fire proved by satisfactory arguments that fire burns. His hearer's mind would never be satisfied, nor would he avoid th….

All science requires mathematics..

In the mathematics I can report no deficience, except that it be that men do not sufficiently understand the excellent use of the pure mathematics, i….

The strongest arguments prove nothing so long as the conclusions are not verified by experience. Experimental science is the queen of sciences and th….

All sciences are connected; they lend each other material aid as parts of one great whole, each doing its own work, not for itself alone, but for the….

[I]f in other sciences we should arrive at certainty without doubt and truth without error, it behooves us to place the foundations of knowledge in m….

Argument is conclusive, but it does not remove doubt, so that the mind may rest in the sure knowledge of the truth, unless it finds it by the method ….