less talk, more action
A blunt, imperative phrase urging someone to stop talking and start working. Often used in informal or motivational contexts.
Less talk, more action. Let's just try it first.
When we were just arguing in the meeting, the boss told us, 'Less talk, more action.'
A set phrase combining 口を動かす (move one's mouth, i.e., talk) and 手を動かす (move one's hands, i.e., work). The exact origin is uncertain, but it is a common motivational saying.