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.

Who never doubted, never half believed.
Where doubt there truth is--'tis her shadow.

Who never doubted, never half believed.
Where doubt there truth is--'tis her shadow.

The road to perseverance lies by doubt.

The road to perseverance lies by doubt.

When you doubt, abstain.

When you doubt, abstain.

Faith keeps many doubts in her pay. If I could not doubt, I should not believe.

Faith keeps many doubts in her pay. If I could not doubt, I should not believe.

Modest doubt is called the beacon of the wise.

Modest doubt is called the beacon of the wise.

Our doubts are traitors,
And make us lose the good we oft might win,
By fearing to read more

Our doubts are traitors,
And make us lose the good we oft might win,
By fearing to attempt.

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,