Part

 1 Pro |     benefit of the human race. Certain it is that all other ambition
 2 Pre |   which we are accustomed have certain general positions which
 3 Pre | servile office of embellishing certain individual authors and increasing
 4 Pre |  mostly proposed to themselves certain petty tasks, taking it for
 5 Pre |       with proposing to itself certain definite works to be accomplished,
 6 Pre |         as a more faithful and certain guide, had to be found out;
 7 Pre |    turn to men, to whom I have certain salutary admonitions to
 8 Pre |       admonitions to offer and certain fair requests to make. My
 9 Plan|       general propositions, as certain fixed poles for the argument
10 Plan|      examine in many ways. For certain it is that the senses deceive;
11 Plan|        the human mind, this is certain: that as an uneven mirror
12 Plan|    proceeding by a regular and certain way to the discovery of
13 Plan|        it be in my own opinion certain and approved), I nevertheless
14 Plan|       beginning to the end, in certain subjects, and those various
15 Plan|  itself on its journey to more certain conclusions. Nevertheless
16 Plan|       can be known except in a certain course and way; and yet
17 Plan|      establishes provisionally certain degrees of assurance for