Speak softly and carry a big stick; you will go far.

著名的“輕聲說話加大棍子”的擴張主義政策，就出自這位“羅斯福王”之手。

There is a homely old adage which runs: "Speak softly and carry a big stick; you will go far." If the American nation will speak softly, and yet build and keep at a pitch of the highest training a thoroughly efficient navy, the Monroe Doctrine will go far.

Theodore Roosevelt, Speech in Chicago, 3 Apr. 1903

make a pitch for US and Canadian slang

a. to give verbal support to

b. to attempt to attract (someone) sexually or romantically