however, I thinking strong arithmetic skills paves a way to mastering algebra. ]]>

On the other hand, Euclid seems to be trying to convince the reader (or someone): “I say that …. therefore …” ]]>

As for “proofs”, this always gives me a chuckle:

“The above proposition is occasionally useful.”

I haven’t read Russell & Whitehead’s Principia, but Russells Introduction to Mathematical Philosophy inspired me to broaden my mathematical thinking.

Best!

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