Meanings of absolute candor in English

He stammered a bit, and there was not absolute candor in his eyes.

I have a right to demand absolute candor of you.

The absolute candor and completely good understanding which existed a short time ago seems to have become clouded.

Do you suppose you can expect absolute candor from a man whom you may order to powder his hair?

Unaware of the newcomer, Genevieve looked regretfully into the troubled face of her companion, and answered him with absolute candor.

Just imagine what the sensation of authors or artists would be if critics were to state their opinions with absolute candor!

Franklin's studies in natural philosophy are characterized by remarkable directness, patience, and inventiveness, absolute candor in seeking the truth, and a powerful scientific imagination.

Absolute candor is, as you say, essential, and so I'll confess that your case does puzzle me.