Q0239
“It is of the nature of reason to perceive things under a…” — Baruch Spinoza (Ethics II, Prop. 44, Cor. 2)
Verified English quotation. Primary source: Ethics II, Prop. 44, Cor. 2. Theme: reason.
English
It is of the nature of reason to perceive things under a certain form of eternity.
Source and attribution
The archive attributes this English wording to Ethics II, Prop. 44, Cor. 2 and files it under Rationalism. That locator distinguishes the passage from loose internet attributions: readers can return to the named work or section to check translation, surrounding argument, and edition-specific wording.
About Baruch Spinoza
Baruch (Benedictus) Spinoza (1632–1677) was a Dutch philosopher of Portuguese-Jewish descent who developed a rigorous geometric metaphysics of God-or-Nature. Excommunicated from Amsterdam’s Jewish community in 1656, he ground lenses and wrote in Latin with a small circle of freethinkers.
How to read this passage
Philosophers disagree about whether reason is the slave of the passions, the legislator of morality, or one tool among others. The quotations here keep that disagreement in play. This passage enters that discussion through reason, knowledge.
Concepts in this quote
- Reason
- Reason is the capacity to give and assess reasons—central to logic, science, ethics, and public argument.
- Knowledge
- Knowledge is the philosophical study of what we can justifiably claim to know—and where certainty ends.
How to cite this quotation
APA: Baruch Spinoza. (n.d.). It is of the nature of reason to perceive things under a certain form of eternity. In Philosophy Blind Box. https://www.philosophydef.com/quotes/q0239
MLA: Baruch Spinoza. “It is of the nature of reason to….” Philosophy Blind Box, https://www.philosophydef.com/quotes/q0239.
Chicago: Baruch Spinoza. “It is of the nature of reason to….” Philosophy Blind Box. Accessed 2026. https://www.philosophydef.com/quotes/q0239.
Frequently asked questions
What is the source of the quotation “It is of the nature of reason to…”?
The passage is attributed to Baruch Spinoza, Ethics II, Prop. 44, Cor. 2. The archive attributes this English wording to Ethics II, Prop. 44, Cor. 2 and files it under Rationalism. That locator distinguishes the passage from loose internet attributions: readers can return to the named work or section to check translation, surrounding argument, and edition-specific wording.
What does Baruch Spinoza mean by reason?
Philosophers disagree about whether reason is the slave of the passions, the legislator of morality, or one tool among others. The quotations here keep that disagreement in play. This passage enters that discussion through reason, knowledge.