He who wishes to see how the soul inhabits the body should look to see how that body uses its daily surroundings. If the dwelling is dirty and neglected, the body will be kept by its soul in the same condition, dirty and neglected.

It is useful to constantly observe, note, and consider.

All our knowledge is the offspring of our perceptions.

Men of lofty genius when they are doing the least work are most active.

Make an effort to collect the good features from many beautiful faces.

There is no object so large but that at a great distance from the eye it does not appear smaller than a smaller object near.

Although nature commences with reason and ends in experience it is necessary for us to do the opposite, that is to commence with experience and from this to proceed to investigate the reason.