A proposition is an assertion that something is or is not the case.
The best time to negotiate your salary for a new job is the moment AFTER they say they want you， and not before. Then it becomes a game of chicken for each side to name an amount first， but it is to your advantage to get them to give a number before you do.
艺术的目的是感动人心。
理论与实验之间的合作对于物理学的进步至关重要。
I don’t like to overthink music—it should flow naturally.