Part

 1 I |     gives me the means, as I think, of gradually augmenting
 2 I |      have been accustomed to think lowly enough of myself,
 3 II|      a private individual to think of reforming a state by
 4 IV|      whilst I thus wished to think that all was false, it was
 5 IV|  observed that this truth, I think, therefore I am (COGITO
 6 IV|      if I had only ceased to think, although all the other
 7 IV| observed that in the words I think, therefore I am, there is
 8 IV|     clearly that in order to think it is necessary to exist,
 9 IV|      whence I had learned to think of something more perfect
10 V |     of God, an error which I think I have already sufficiently
11 VI|    position to discern, as I think, with sufficient clearness
12 VI|    change my opinion, and to think that I ought indeed to go
13 VI|  applied to practice. ~And I think I may say without vanity,
14 VI| followers of Aristotle would think themselves happy if they
15 VI|     and the facility which I think I possess in always discovering
16 VI|       simply to state what I think is required for defense
17 VI|  that it may be known that I think I am able to deduce them
18 VI|    has taken twenty years to think out, as soon as he has spoken
19 VI|    the "Dioptrics," I do not think that any one on that account