How to use "thinker" in a sentence

She was an English thinker and writer who wrote about education and social equality for women

One of the greatest European women at this time was a French philosopher, thinker and writer called Simone de Beauvoir.

In it, she said, "One is not born, but rather becomes, a woman." With this famous sentence, Simone was the first thinker to write about sex and gender