He who begins by loving Christianity better than Truth will proceed by loving his own sect or church better than Christianity, and end by loving himself better than all.

-Coleridge, Samuel Taylor
  Aids to Reflection: Moral and Religious  Aphorisms.

The sedate, sober, silent, serious, sad-coloured sect.

-Honorius of Autun
  Of the Quakers. Comic  Annual,'The Doves and the Crows'.

Fanatics have their dreams, wherewith they weave A paradise for a sect.

-Keats,John
  'The Fall of Hyperion', l.1^2. (Published1856.)

I maintain that truth is a pathless land, and you cannot approach it by any path whatsoever, by any religion, by any sect.

-Krishnamurti,Jiddu
  Speech in Holland. Quoted in Terry Lynn Taylor Messengers of Light, ch.32.

Persecution produced its natural effect on them.It found them a sect; it made them a faction.

-1st Baron
  On the Puritans, House of Commons, 22 May.

   I never was attached to that great sect, Whose doctrine is that each one should select Out of the crowd a mistress or a friend, And all the rest, though fair and wise, commend To cold oblivion.

-Shelley, Percy Bysshe
  'Epipsychidion', l.149^53.

Auctor nominis eius Christus,Tiberio imperitante, per procuratorem Pontium Pilatum, supplicio affectus erat. Christ, the leader of the sect, had been put to death by the procurator Pontius Pilate in the reign of Tiberius.

-Tacitus
Annals, bk.15, ch.44.

When Pearse summoned Cuchulain to his side, What stalked through the Post Office? What intellect, What calculation, number, measurement, replied? We Irish, born into that ancient sect But thrown upon this filthy modern tide And by its formless spawning fury wrecked, Climb to our proper dark, that we may trace The lineaments of a plummet-measured face.

-Yeats,W(illiam) B(utler)
  'The Statues', stanza 4. Collected in Last Poems (1939).