Every man who observes vigilantly and resolves steadfastly grows unconsciously into genius.

Every man who observes vigilantly and resolves steadfastly grows unconsciously into genius.

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.

A few observations and much reasoning lead to error; many observations and a little reasoning lead to truth.

A few observations and much reasoning lead to error; many observations and a little reasoning lead to truth.

It is the theory that decides what can be observed.

It is the theory that decides what can be observed.

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

You can observe a lot just by watching.

You can observe a lot just by watching.

To him that watches, everything is revealed.

To him that watches, everything is revealed.

We cannot create observers by saying "observe," but by giving them the power and the means for this observation and read more

We cannot create observers by saying "observe," but by giving them the power and the means for this observation and these means are procured through education of the senses

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