Michelangelo did so also; and his plan was not only accepted, but eventually carried out.
Nevertheless Sangallo, one of the most illustrious professional architects then alive, could not but have felt deeply wounded by the treatment he received.

It was natural for his followers to exclaim that Buonarroti had contrived to oust their aged master, and to get a valuable commission into his own grasp, by the discourteous exercise of his commanding prestige in the world of art.
In order to be just to Michelangelo, we must remember that he was always singularly modest in regard to his own performances, and severe in self-criticism.

Neither in his letters nor in his poems does a single word of self-complacency escape his pen.

He sincerely felt himself to be an unprofitable servant: that was part of his constitutional depression.

We know, too, that he allowed strong temporary feelings to control his utterance.