He who can take no great interest in what is small will take false interest in what is great.

He who can take no great interest in what is small will take false interest in what is great.

It is the theory that decides what can be observed.

It is the theory that decides what can be observed.

One must talk about everything according to its nature, how it comes to be and how it grows. Men have read more

One must talk about everything according to its nature, how it comes to be and how it grows. Men have talked about the world without paying attention to the world of their own minds, as if they were asleep or absent-minded.

You can observe a lot just by watching.

You can observe a lot just by watching.

Observation--activity of both eyes and ears.

Observation--activity of both eyes and ears.

You can see a lot just by observing

You can see a lot just by observing

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

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

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