Beware of jokes from which we go away hollow and ashamed.

Sugar is not so sweet to the palate as sound to the healthy ear.

Every experiment, by multitudes or by individuals, that has a sensual and selfish aim, will fail.

A third felicity of age is that it has found expression. The youth suffers not only from ungratified desires, but from powers untried, and from a picture in his mind of a career which has as yet no outward reality. He is tormented with the want of correspondence between things and thoughts.

[T]omorrow is a new day. You shall begin it well & serenely, & with too high a spirit to be cumbered with your old nonsense. This day ... is too dear with its hopes & invitations to waste a moment on the rotten yesterdays.

When he is pushed, tormented, defeated, he has a chance to learn something; ... he learns his ignorance, is cured of the insanity of conceit; has got moderation and real skill.

The multitude of the sick shall not make us deny the existence of health.