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.

It is always advisable to perceive clearly our ignorance.

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.

When you combine ignorance and leverage, you get some pretty interesting results.

The true Wisdom is in recognizing our own ignorance.

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