It is so easy to hide our ignorance under such expressions as the plan of creation or unity of design, etc., and to think that we give an explanation when we only restate a fact.

Ignorance more frequently begets confidence than does knowledge: it is those who know little, and not those who know much, who so positively assert that this or that problem will never be solved by science.

It is always advisable to perceive clearly our ignorance.

Ignorance is the curse of God; knowledge is the wing wherewith we fly to heaven.

There is little hope for us until we become toughminded enough to break loose from the shackles of prejudice, half-truths, and downright ignorance.

The world is not composed of heroes and villains, but of men and women with all the passions that God has given them. The ignorant condemn, but the wise pity.