To have doubted one's own first principles, is the mark of a civilized man.

To have doubted one's own first principles, is the mark of a civilized man.

The road to perseverance lies by doubt.

The road to perseverance lies by doubt.

Fanaticism is . . . overcompensation for doubt.

Fanaticism is . . . overcompensation for doubt.

Doubting charms me not less than knowledge.
[It., Non menno che saper, dubbiar m'aggrata.]

Doubting charms me not less than knowledge.
[It., Non menno che saper, dubbiar m'aggrata.]

When in doubt, win the trick.

When in doubt, win the trick.

Doubt indulged soon becomes doubt realized.
- Frances R. Havergal,

Doubt indulged soon becomes doubt realized.
- Frances R. Havergal,

But now I am cabined, cribbed, confined, bound in
To saucy doubts and fears.

But now I am cabined, cribbed, confined, bound in
To saucy doubts and fears.

And he that doubteth is damned if he eat, because he eateth not
of faith: for whatsoever is not read more

And he that doubteth is damned if he eat, because he eateth not
of faith: for whatsoever is not of faith is sin.

Doubt is the father of invention.

Doubt is the father of invention.