He alone is an acute observer, who can observe minutely without being observed.

He alone is an acute observer, who can observe minutely without being observed.

One must always tell what one sees. Above all, which is more difficult, one must always see what one sees.

One must always tell what one sees. Above all, which is more difficult, one must always see what one sees.

Reason, Observation, and Experience -- the Holy Trinity of Science.

Reason, Observation, and Experience -- the Holy Trinity of Science.

To him that watches, everything is revealed.

To him that watches, everything is revealed.

We don't know who discovered water, but we know it wasn't the fish.

We don't know who discovered water, but we know it wasn't the fish.

This inescapable duty to observe oneself: if someone else is observing me, naturally I have to observe myself too; if read more

This inescapable duty to observe oneself: if someone else is observing me, naturally I have to observe myself too; if none observe me, I have to observe myself all the closer

The observation of nature is part of an artist's life, it enlarges his form [and] knowledge, keeps him fresh and read more

The observation of nature is part of an artist's life, it enlarges his form [and] knowledge, keeps him fresh and from working only by formula, and feeds inspiration.

As a man is, so he sees.

As a man is, so he sees.

You can observe a lot by just watching.

You can observe a lot by just watching.