You have had many

You have had many and great sadnesses, which passed. And you say that even this passing was hard for you and put you out of sorts. But, please, consider whether these great sadnesses have not rather gone right through the center of yourself? Whether much in you has not altered, whether you have not somewhere, … Read more

I would beg the

I would beg the wise and learned fathers (of the church) to consider with all diligence the difference which exists between matters of mere opinion and matters of demonstration. … [I]t is not in the power of professors of the demonstrative sciences to alter their opinions at will, so as to be now of one way of thinking and now of another. … [D]emonstrated conclusions about things in nature of the heavens, do not admit of being altered with the same ease as opinions to what is permissible or not, under a contract, mortgage, or bill of exchange.
Galileo Galilei