It is contrary to reasoning to say that there is a vacuum or space in which there is absolutely nothing.

The greatest minds are capable of the greatest vices as well as of the greatest virtues.

The greatest minds, as they are capable of the highest excellencies, are open likewise to the greatest aberrations; and those who travel very slowly may yet make far greater progress, provided they keep always to the straight road, than those who, while they run, forsake it.

If ... it is not in my power to arrive at the knowledge of any truth, I may at least do what is in my power, namely, suspend judgement.

I was convinced that our beliefs are based much more on custom and example than on any certain knowledge.

In God there is an infinitude of things which I cannot comprehend, nor possibly even reach in any way by thought; for it is the nature of the infinite that my nature, which is finite and limited, should not comprehend it.

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