To be ignorant of the past is to be forever a child.

I prefer the most unfair peace to the most righteous war.

Nature has circumscribed the field of life within small dimensions, but has left the field of glory unmeasured.

The following passage is one of those cited by Copernicus himself in his preface to De Revolutionibus: "The Syracusan Hicetas, as Theophrastus asserts, holds the view that the heaven, sun, moon, stars, and in short all of the things on high are stationary, and that nothing in the world is in motion except the earth, which by revolving and twisting round its axis with extreme velocity produces all the same results as would be produced if the earth were stationary and the heaven in motion. . . ."

History is truely the witness of times past, the light of truth, the life of memory, the teacher of life, the messenger of antiquity.

In all great arts, as in trees, it is the height that charms us; we care nothing for the roots or trunks, yet it could not be without the aid of these.

Nature herself makes the wise man rich.