Danger is the very basis of superstition. It produces a searching after help supernaturally when human means are no longer supposed to be available.

Newton's health, and confusion to mathematics.

Nothing is difficult; it is only we who are indolent.

Genius in poverty is never feared, because nature, though liberal in her gifts in one instance, is forgetful in another.

To procrastinate seems inherent in man, for if you do to-day that you may enjoy to-morrow it is but deferring the enjoyment; so that to be idle or industrious, vicious or virtuous, is but with a view of procrastinating the one or the other.

No man, perhaps, is so wicked as to commit evil for its own sake. Evil is generally committed under the hope of some advantage the pursuit of virtue seldom obtains. Yet the most successful result of the most virtuous heroism is never without its alloy.

Never disregard what your enemies say. They may be severe, they may be prejudiced, they may be determined to see only in one direction, but still in that direction see clearly. They do not speak all the truth, but they generally speak the truth from one point of view; so far as that goes, attend to them.