Divide each difficulty at hand into as many pieces as possible and as could be required to better solve them.
It is possible that I am dreaming right now and that all of my perceptions are false.
Bad books engender bad habits, but bad habits engender good books.
Sensations are nothing but confused modes of thinking.
There is nothing more ancient than the truth.
I did not imitate the skeptics who doubt only for doubting's sake, and pretend to be always undecided; on the contrary, my whole intention was to arrive at a certainty, and to dig away the drift and the sand until I reached the rock or the clay beneath.