intelligent and strongly stated
pithy - brief
To be ‘pithy’ suggests more than just an economical use of words. It describes a statement or piece of writing that is clever, direct, and full of meaning. As such, something pithy tends to be memorable and impactful. It can sometimes be regarded as disrespectful when directed towards somebody in authority.
One of the staff here offered me some pithy advice on my first day in the office and it has stuck with me ever since.
The slogan you came up with is a little convoluted. We need something pithier.
The pithy remark Jack made in the meeting was quite funny, but the boss felt he had overstepped the mark.