After I had thus confirmed my self with these Maximes, and laid them up with the Articles of Faith, which always had the first place in my Belief, I judg'd that I might freely undertake to expell all the rest of my opinions. And forasmuch as I did hope to bring it the better to passe by conversing with men, then by staying any longer in my stove, where I had had all these thoughts: before the Winter was fully ended, I returned to my travels; and in all the nine following yeers I did nothing but rowl here and there about the world, endeavouring rather to be a spectator, then an actor in all those Comedies which were acted therein: and reflecting particularly on every subject which might render it suspected, or afford any occasion mistake. In the mean time I rooted out of my minde all those errours which formerly had crept in. Not that I therein imitated the Scepticks, who doubt onely to the end they may doubt, and affect to be always unresolved: For on the contrary, all my designe tended onely to fix my self, and to avoid quick-mires and sands, that I might finde rock and clay: which (me thought) succeeded well enough; forasmuch as, seeking to discover the falshood or uncertainty of those propositions I examined, (not by weak conjectures, but by clear and certain ratiocinations) I met with none so doubtfull, but I thence drew some conclusion certain enough, were it but onely this, That it contained nothing that was certain. And as in pulling down an old house, commonly those materials are reserved which may serve to build a new one; so in destroying all those my opinions which I judg'd ill grounded, I made divers observations, and got severall experiences which served me since to establish more certain ones. And besides I continued to exercise my self in the Method I had prescribed. For I was not only carefull to direct all my thoughts in generall according to its rules, but I from time to time reserv'd some houres, which I particularly employd to practice it in difficulties belonging to the Mathematicks, loosening from all the principles of other Sciences, which I found not stable enough, as you may see I have done in divers explain'd in my other following discourses. And thus not living in appearance otherwise then those who having no other business then to lead a sweet and innocent life, study to separate pleasures from vices, and use honest recreations to enjoy their ease without wearinesse; I did not forbear to pursue my design, and advance in the knowledg of truth, perhaps more, then if I had done nothing but read books or frequent learned men.