To write (or think) well, you need to read well.
Dig in.

G.K. Chesterton
"The aim of the sculptor is to convince us that he is a sculptor; the aim of the orator, is to convince us that he is not an orator."
Eichmann in Jerusalem
Hannah Arendt
"Good can be radical; evil can never be radical..."
To Kill a Mockingbird
Harper Lee
"Atticus told me to delete the adjectives and I’d have the facts."
Tao Te Ching
Lao Tzu
“There is a time to live and a time to die but never to reject the moment.”