Both Uses

tact
in
A Sketch of the Past
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Fred Maitland thus resolutely refused to believe, though tactfully instructed by Carry, that Leslie's tempers were more than what he called (in his biography) coloured showers of sparks.†
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tactfully = in a manner that makes others feel good
We were going to the opera, The Ring; it was broad daylight, and George, with a lack of tact with which he reproached himself afterwards—he would tot up the night's successes and failures—had placed her opposite the window; and she was then not quite at her prime.†

tact = the ability or act of saying or handling things in such a way that others feel good about them

Definitions:

(1) (tact)
the ability or act of saying or handling things in such a way that others feel good about them
(2) (meaning too rare to warrant focus)