Q: What’s good language for a cover letter someone will want to read?
A: Stay away from standard language like: Please accept this cover letter and resume as an opportunity to explore employment with your firm. Instead, nix the passive voice and tentative language and actually show real interest from the first line.
How about something like: I am submitting my cover letter and resume as an expression of my enthusiasm for becoming an attorney in your firm.
Then focus briefly on what you could do–not on what you would gain–and on why the organization draws you (but not with empty platitudes or by repeating language directly from their website). Keep it short, foreshadow rather than repeat your resume, and avoid boilerplate language and legalese.
Don’t just assert that you’re a good writer; write a letter worth reading and wrap it up well. A cover letter should be impactful, not lengthy. Whet their appetite for looking at your resume and contacting you, and you’ve done your job.