Why did Charles Augustin Sainte-Beuve turn away from the Saint-Simonian movement?

Charles Augustin Sainte-Beuve turned away from the Saint-Simonian movement primarily because he was repelled by the sentimental excesses and intemperance of its leaders.1

Although he had been involved with the group—even drafting two manifestos when they took over management of the periodical Le Globe in 1830—his disillusionment with the leadership's behavior led to his departure. Despite this break, he maintained a lingering sympathy for the movement's vision of a technocratic society founded on the brotherhood of man for three decades afterward.1