You say that faith is a gift; this is perhaps the most correct thing that can be said about it. - Carl Friedrich Gauss

I believe you are more believing in the Bible than I. I am not, and, you are much happier than I. I must say that so often in earlier times when I saw people of the lower classes, simple manual laborers who could believe so rightly with their hearts, I always envied them, and now tell me how does one begin this?

The problem of distinguishing prime numbers from composite numbers and of resolving the latter into their prime factors is known to be one of the most important and useful in arithmetic. It has engaged the industry and wisdom of ancient and modern geometers to such an extent that it would be superfluous to discuss the problem at length. … Further, the dignity of the science itself seems to require that every possible means be explored for the solution of a problem so elegant and so celebrated.

Letter to Bessel (1826), quoted in Dunnington, G. Waldo. "Gauss, His Disquisitiones Arithmeticae, and His Contemporaries in the Institut de France." National Mathematics Magazine 9.7 (1935): 187-192.