Sarcasm is always perceived as an attack.
The greater the responsibility, the greater the reward.
You can never get more by saying "No." You can hold a current position by saying "No", but you can only move forward by saying "Yes."
Nothing has any power except the power that you give it.
Let your yes be yes and your no be no--you can always change your mind.
Either you will do now what it takes or ten years from now you wish that you had.