All theory, dear friend, is gray, but the golden tree of life springs ever green,
Background photo by Jeremy Bishop on Unsplash
Philosophy aims at the logical clarification of thoughts. Philosophy is not a body of doctrine but an activity.
A theory which is not refutable by any conceivable event is non-scientific. Irrefutability is not a virtue of a theory (as people often think) but a vice.
It is the theory that decides what can be observed.
True art is creation, and creation is beyond all theories.
Whenever a theory appears to you as the only possible one, take this as a sign that you have neither understood the theory nor the problem which it was intended to solve.
Scientific theory is a contrived foothold in the chaos of living phenomena.
Experience without theory is blind, but theory without experience is mere intellectual play.
I cannot help fearing that men may reach a point where they look on every new theory as a danger, every innovation as a toilsome trouble, every social advance as a first step toward revolution, and that they may absolutely refuse to move at all.
If the facts don't fit the theory, change the facts.