Nature, which alone is good, is wholly familiar and common.

You gave me health that I might serve you; and so often I failed to use my good health in your service. Now you send me sickness in order to correct me Grant that, having ignored the things of spirit when my body was vigorous, I may now enjoy spiritual sweetness while my body groans with pain.

Man is but a reed, the most feeble thing in nature, but he is a thinking reed.

There are only two kinds of men: the righteous who think they are sinners and the sinners who think they are righteous.

There would be too great darkness, if truth had not visible signs.

Those honor nature well, who teach that she can speak on everything...

[Unbelievers] think they have made great efforts to get at the truth when they have spent a few hours in reading some book out of Holy Scripture, and have questioned some cleric about the truths of the faith. After that, they boast that they have searched in books and among men in vain.