Suspicion amongst thoughts are like bats amongst birds, they never fly by twilight.

It is rightly laid down that 'true knowledge is knowledge by causes'. Also the establishment of four causes is not bad: material, formal, efficient and final.

If a man will begin with certainties, he shall end in doubts, but if he will content to begin with doubts, he shall end in certainties.

None of the affections have been noted to fascinate and bewitch but envy.

A picture should be a re-creation of an event rather than an illustration of an object; but there is no tension in the picture unless there is a struggle with the object.

Nuptial love makes mankind; friendly love perfects it; but wanton love corrupts and debases it.

The universe must not be narrowed down to the limit of our understanding, but our understanding must be stretched and enlarged to take in the image of the universe as it is discovered.