Of all nature's gifts to the human race, what is sweeter to a man than his children?

No obligation to do the impossible is binding.

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. . . ."

As fire when thrown into water is cooled down and put out, so also a false accusation when brought against a man of the purest and holiest character, boils over and is at once dissipated, and vanishes.

The authors who affect contempt for a name in the world put their names to the books which they invite the world to read.

Inability to tell good from evil is the greatest worry of man's life.

Through ignorance of what is good and what is bad, the life of men is greatly perplexed.