Who said “The fearful unbelief is unbelief in yourself.”?

“Who never doubted never half believed Where doubt there truth is—'t is her shadow.”

“To doubt is worse than to have lost; And to despair is but to antedate those miseries that must fall on us.”

“Men become civilized, not in proportion to their willingness to believe, but in proportion to their readiness to doubt.”

“For there is no despair so absolute as that which comes with the first moments of our first great sorrow, when we have not yet known what it is to have suffered and be healed, to have despaired and to have recovered hope.”

“When you doubt, abstain.”

“Wonder is the basis of worship.”

“Every noble work is at first impossible.”

“A fair day's wages for a fair day's work.”

“Speech is of time, silence is of eternity.”

“Clever men are good, but they are not the best.”

“History is the essence of innumerable biographies.”