The Book ofbook by French Mathematicianmathematician Jacques Hadamard
The Psychology of Invention in the Mathematical Field, The Psychology of Invention in the Mathematical Field.
https://www.amazon.fr/Psychology-Invention-Mathematical-Field/dp/0486201074
The The book discusses the four stages of thought :
1); Preparation (conscious work setting up the problem and trying to solve it)
2); incubation (no conscious work on the problem)
3); illumination (the fruits of incubation where an insight is received) and finally
4): verification (consciously testing and verifying the insight)
Preparation (conscious work setting up the problem and trying to solve it)
Incubation (no conscious work on the problem)
Illumination (the fruits of incubation where an insight is received) and finally
Verification (consciously testing and verifying the insight)
Gromov's Ergobrain Program for Universal learning program
Great Circle of Mysteries Mathematics, the World, the Mind Authors: Gromov, M.
- Mischa Gromov, Great Circle of Mysteries: Mathematics, the World, the Mind, Springer (2018) doi:10.1007/978-3-319-53049-9 (see also the essay of the same name from 2015).