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.

Laugh at yourself, but don't ever aim your doubt at yourself. Be bold. When you embark for strange places, don't read more

Laugh at yourself, but don't ever aim your doubt at yourself. Be bold. When you embark for strange places, don't leave any of yourself safely on shore. Have the nerve to go into unexplored territory.

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

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

Doubt is uncomfortable, certainty is ridiculous.

Doubt is uncomfortable, certainty is ridiculous.

The doubtful beam long nods from side to side.

The doubtful beam long nods from side to side.

Doubt yourself and you doubt everything you see. Judge yourself
and you see judges everywhere. But if you listen read more

Doubt yourself and you doubt everything you see. Judge yourself
and you see judges everywhere. But if you listen to the sound of
your own voice, you can rise above doubt and judgment. And you
can see forever.

There is nothing more dreadful than the habit of doubt. Doubt separates people. It is a poison that disintegrates friendships read more

There is nothing more dreadful than the habit of doubt. Doubt separates people. It is a poison that disintegrates friendships and breaks up pleasant relations. It is a thorn that irritates and hurts; it is a sword that kills.

I follow my law and fulfil it all duly--and look! when your
doubt runneth high--
North points to read more

I follow my law and fulfil it all duly--and look! when your
doubt runneth high--
North points to the needle!

There lives more faith in honest doubt,
Believe me, than in half the creeds.

There lives more faith in honest doubt,
Believe me, than in half the creeds.