Biology Quote by Theodor Schwann
“The elementary parts of all tissues are formed of cells in an analogous, though very diversified manner, so that it may be asserted, that there is one universal principle of development for the elementary parts of organisms, however different, and that this principle is the formation of cells.”
About This Quote
Source Book: Microscopic Observations on the Composition of Animals, 1839
All tissues develop from cells following a single universal principle, despite diverse forms.
In simple terms: Cells are the common building blocks of all organisms.
Recognize cellular unity in biology.
Themes
Mood
Type
When to use this quote
- medical research
- education
- biology textbooks
- lab studies
Key Concepts
Questions to Reflect On
- How does cellular unity explain organismal diversity?
- What exceptions exist to this principle?
Complex organisms may have additional regulatory mechanisms beyond simple cellular formation.