What you persist in doing gets easier. The task hasn't changed, but your ability to do it has increased.

In like manner the effect of every action is measured by the depth of the sentiment from which it proceeds. The great man knew not that he was great. It took a century or two for that fact to appear. What he did, he did, he did because he must; it was the most natural thing in the world, and grew out of the circumstances of the moment.

The greatest discoveries are those that shed light unto ourselves.

The laws of each are convertible into the laws of any other.

The mob is man voluntarily descending to the nature of the beast. Its fit hour of activity is night. Its actions are insane like its whole constitution. It persecutes a principle; it would whip a right; it would tar and feather justice, by inflicting fire and outrage upon the houses and persons of those who have these. It resembles the prank of boys, who run with fire-engines to put out the ruddy aurora streaming to the stars.

A man is known by the books he reads.

The beautiful is never plentiful.