Biology Quote by Thomas Henry Huxley
““The tendency to variation in living beings, which all admitted as a matter of fact; the selective influence of conditions, which no one could deny to be a matter of fact, when his attention was drawn to the evidence; and the occurrence of great geological changes which also was matter of fact; could be used as the only necessary postulates of a theory of the evolution of plants and animals which, even if not at once, competent to explain all the known facts of biological science, could not be shown to be inconsistent with any.””
About This Quote
Source Lecture: Evolutionary Theory, 1863
Biological evolution can be explained by variation, selection, and geological change, forming a consistent theoretical framework.
In simple terms: Evolution relies on variation, selection, and earth changes.
Study variation and selection in evolution.
Themes
Mood
Type
When to use this quote
- education
- research
- science communication
Key Concepts
Questions to Reflect On
- How does variation drive evolution?
- What role do geological changes play?
Complex scientific concepts may be oversimplified for lay audiences.