The five senses are the ministers of the soul.

I have discovered that a screw-shaped device such as this, if it is well made from starched linen, will rise in the air if turned quickly.

One can have no more mastery over the environment, than one has over himself.

How painting surpasses all human works by reason of the subtle possibilities which it contains.

The greatest geniuses sometimes accomplish more when they work less.

Advertisers constantly invent cures to which there is no disease.

You should look at certain walls stained with damp, or at stones of uneven color. If you have to invent some backgrounds you will be able to see in these the likeness of divine landscapes, adorned with mountains, ruins, rocks, woods, great plains, hills and valleys in great variety; and expressions of faces and clothes and an infinity of things which you will be able to reduce to their complete and proper forms. In such walls the same thing happens as in the sound of bells, in whose stroke you may find every named word which you can imagine.