Book, Paragraph

 1      I,  2 |        this, nothing must be more certain or better known to him than
 2      I,  4 |        that, while they belong to certain subjects, the subjects to
 3      I,  7 |      question are numbers. How in certain cases transference is possible
 4      I,  13|   spherical because it waxes in a certain manner, but waxes in such
 5      I,  18|           mathematical character, certain properties which can be
 6      I,  22|    dependent on the acceptance of certain premisses-i.e. hypothetically-the
 7      I,  23|         so far as they are both a certain kind of figure, and not
 8      I,  25|            and the ground is more certain than the conclusion.~Hence
 9      I,  25|           a better known and more certain truth, and if the negative
10      I,  25|         and better known and more certain, will be superior.~(3) The
11      I,  26|   impossibile. We must first make certain what is the difference between
12      I,  31|       demonstration. Nevertheless certain points do arise with regard
13     II,  3 |          And let us first discuss certain difficulties which these
14     II,  5 | necessarily from the premising of certain other facts: division demonstrates
15     II,  12|        Now we observe in Nature a certain kind of circular process