It is perfectly delightful to take advantage of the conscientious labors of those who go through and through volume after volume, divide with infinite patience the gold from the dross, and present us with the pure and shining coin. Such men may be likened to bees who save us numberless journeys by giving us the fruit of their own.

Arguments cannot be answered with insults. . . . Kindness is strength. . . . Anger blows out the lamp of the mind. In the examination of a great and important question, every one should be serene, slow-pulsed, and calm.

I would rather smoke one cigar than hear two sermons.

Creationists use facts the same way a drunk uses a lightpost: for support instead of illumination

As long as a man lives he should study. Death alone has the right to dismiss the school.

If I had my way I'd make health catching instead of disease.

Memory is the miser of the mind; forgetfulness the spendthrift.