And I shall always hold myself more obliged to those by whose favour I enjoy uninterrupted leisure than to any who might offer me the most honourable positions in the world.

How do we know that anything really exists, that anything is really the way it seems ot us through our senses?

Travelling is almost like talking with those of other centuries.

What then is the source of my errors? They are owing simply to the fact that, since the will extends further than the intellect, I do not contain the will within the same boundaries; rather, I also extend it to things I do not understand. Because the will is indifferent in regard to such matters, it easily turns away from the true and the good; and in this way I am deceived and I sin.

I know that I exist; the question is, What is this 'I' that 'I' know.

At last I will devote myself sincerely and without reservation to the general demolition of my opinions.

If I simply refrain from making a judgment in cases where I do not perceive the truth with sufficient clarity and distinctness, then it is clear that I am behaving correctly and avoiding error.