We must be both "sure we are right" and "make haste slowly."
Come, let us make haste, or the sunshine will be gone, and Phoebus along with it.
It seemed to Dilly that she could not make haste enough to be there.
"We must make haste, Miss Calendar," said Kirkwood, ignoring the implication.
Cornelius understood that he must make haste to continue the conversation.