I recently read Writes and Write-Nots by Paul Graham, in which he emphasizes the significant of writing:
The reason is something I mentioned earlier: writing is thinking. In fact there’s a kind of thinking that can only be done by writing. You can’t make this point better than Leslie Lamport did:
If you’re thinking without writing, you only think you’re thinking.
I like the sentence, but I wish to check Lamport really said that. By some searching, I can confirm it. It’s from his TLA+ slide in 2016, in which he said (How to Think ):
“Writing is nature’s way of letting you know how sloppy your thinking is.” Guindon
To think, you have to write.
If you’re thinking without writing, you only think you’re thinking.