As a lecturer, a theoriser, and a populariser of his art, Haydon has just claims to grateful remembrance.    From Wordnik.com.  [Little Memoirs of the Nineteenth Century] Reference

And think about whether they want to be associated with this sort of bullying, aggressive, rude behaviour - irrespective of the sincerity (or otherwise) of the beliefs held, and the social skills and mental functioning abilities (or otherwise) of the theoriser.    From Wordnik.com.  [If you are a conspiracy theorist....] Reference

Darwin was an experimental scientists before he was a theoriser.    From Wordnik.com.  [Exiled Preacher] Reference

We shall see later that he possesses qualities altogether apart from those of the theoriser or the man of action.    From Wordnik.com.  [Sir John French]

He makes the young lover an idealistic theoriser about the very things about which he really would have been a sort of mystical materialist.    From Wordnik.com.  [George Bernard Shaw] Reference

The mystery of the star-depths has had its charm for the mathematician as well as for the poet; for the exact observer as for the most fruitful theoriser; nay, for the man of business as for him whose life is passed in communing with nature.    From Wordnik.com.  [Myths and Marvels of Astronomy] Reference

This was written in the thirteenth century, and it is scarcely edifying to find four hundred years after this the Jesuit Father Lana, who contrived to make his name live in history as a theoriser in aeronautics, arrogating to himself the bold conception of the English Friar, with certain unfortunate differences, however, which in fairness we must here clearly point out.    From Wordnik.com.  [The Dominion of the Air; the story of aerial navigation] Reference

To that I’ll begin by saying—if you haven’t already noticed— that I’m an inveterate theoriser.    From Wordnik.com.  [Nothing Much] Reference

A man rather of character than of intellect, of great moral strength rather than of intellectual brilliancy -- a fighter and an idealist, not a theoriser.    From Wordnik.com.  [A Girl Among the Anarchists] Reference

Observer, a good theoriser makes a good.    From Wordnik.com.  [More Letters of Charles Darwin — Volume 2] Reference

A theoriser.    From Wordnik.com.  [Mr. Britling Sees It Through] Reference