1. Since man is a servant and interpreter of nature, all he can do and understand is that he has observed so many things about natural processes in fact or in thought, and there is only so much.

Said by: bacon: a new tool.

Introduction: Francis Bacon (156 1- 1626), the first viscount St. Alben (1viscount St. Alban), was an English essayist and philosopher during the Renaissance.

Second, observing and experimenting with nature is a unique and true scientific method.

From: [English] Dampier: History of Science and Its Relationship with Philosophy and Religion.

Third, careful observation is a factor of all great achievements.

Said by Spencer: On education.

Introduction: Herbert Spencer (1April 27th, 820–1February 8th, 903) is a British philosopher, sociologist and educator. Known as "the father of social Darwinism", he put forward a set of theories that applied the evolutionary theory of survival of the fittest to sociology, especially to education and class struggle.

Fourth, the observation of nature should be focused, thinking should be profound, and experiments should be accurate.

From: [France] Diderot: Selected Works of Diderot's Philosophy

Introduction: Denis Derot (English: Denis Diderot, French: Diderot, 17 13 10 year/0/5 October-13 July 7841), a French enlightenment thinker, philosopher and philosopher.

Fifth, we have three main methods: observing, thinking and experimenting with nature. Observe and collect facts; Consider combining them; Experiments are used to confirm the results of the combination.

From: [France] Diderot: Selected Works of Diderot's Philosophy