A lot of the power of Forth comes from its metaprogramming capabilities and having the compiler available at runtime, all wrapped in a tiny footprint. Similarly to Lisp, it empowers one to explore a problem domain without getting in the way. These concepts are alien to C which is downright hostile to exploratory programming.
If you really want to understand the genius of Forth and its creator, I suggest reading everything that Chuck Moore put down in writing starting with "Programming a problem-oriented language".
A lot of us today, being bogged down in the sort of tedium-inducing programming that pays the bills, tend to forget that programming languages are (or should be!) primarily about expressing ideas. Forth is still one of the best languages to do that in.
If you really want to understand the genius of Forth and its creator, I suggest reading everything that Chuck Moore put down in writing starting with "Programming a problem-oriented language".
A lot of us today, being bogged down in the sort of tedium-inducing programming that pays the bills, tend to forget that programming languages are (or should be!) primarily about expressing ideas. Forth is still one of the best languages to do that in.