He who is mistaken in an action which he sincerely believes to be right may be an enemy, but retains our esteem.
~ The Mysterious Island
by Jules Verne
She prized the frank, the open-hearted, the eager character beyond all others. Warmth and enthusiasm did captivate her still. She felt that she could so much more depend upon the sincerity of those who sometimes looked or said a careless or a hasty thing, than of those whose presence of mind never varied, whose tongue never slipped.
by Jane Austen
Simple, sincere people seldom speak much of their piety. It shows itself in acts rather than in words, and has more influence than homilies or protestations.
~ Little Women
by Louisa May Alcott
"In matters of grave importance, style, not sincerity is the vital thing."
~ The Importance of Being Earnest
by Oscar Wilde
Some happy talent, and some fortunate opportunity, may form the two sides of the ladder on which some men mount, but the rounds of that ladder must be made of stuff to stand wear and tear; and there is no substitute for thorough-going, ardent, and sincere earnestness.
~ David Copperfield
by Charles Dickens
"The highest form of affection is based on full sincerity on both sides."
~ Jude the Obscure
by Thomas Hardy
Away she hurried, not beautiful, not supremely brilliant, but filled with something that took the place of both qualities -- something best described as a profound vivacity, a continual and sincere response to all that she encountered in her path through life.
~ Howards End
by E. M. Forster