His only fault is that he has no fault.

Why do we believe that in all matters the odd numbers are more powerful?

Grief has limits, whereas apprehension has none. For we grieve only for what we know has happened, but we fear all that possibly may happen.

As land is improved by sowing it with various seeds, so is the mind by exercising it with different studies.

Among these things, one thing seems certain - that nothing certain exists and that there is nothing more pitiful or more presumptuous than man.

True glory consists in doing what deserves to be written, and writing what deserves to be read.

The ancients had little doubt about the true shape of the earth: "It's [the world's] shape has the rounded appearance of a perfect sphere. This is shown first of all by the name of 'orb' which is bestowed upon it by the general consent of mankind. ...Our eyesight also confirms this belief, because the firmament presents the aspect of a concave hemisphere equidistant in every direction, which would be impossible in the case of any other figure."