How ?

Question

How do computer scientists build programming languages ? Are there any programming languages we need to learn to build a programming language? Comment your knowledge below 👇. So we can increase our knowledge of the ocean .

Answer 1

for instance: Python was build be inspiring of C and Ruby, and Perl....

but what about the first programming language? and about C and Pascal?
if you don't know programming, you must need a logic to build something....