A tree nowhere offers a straight line or a regular curve, but who doubts that root, trunk, boughs, and leaves embody geometry?

Doubt is the beginning, not the end, of wisdom.

No gun is perfectly true. So the marksman, that he may hit the bull's-eye, points elsewhere.

A superstition is a premature explanation that overstays its time.

Dumbness and silence are two different things.

Some young folks have wind-fall minds, prematurely detached from the tree of knowledge for a life-long sourness and pettiness.

Nothing cools so fast as undue enthusiasm. Water that has boiled freezes sooner than any other.

Educated folk keep to one another's company too much, leaving other people much like milk skimmed of its cream.

Form may be of more account than substance. A lens of ice will focus a solar beam to a blaze.

When a learner, in the fullness of his powers, comes to great truths unstaled by premature familiarity, he rejoices in the lateness of his lessons.

To render aid to the worthless is sheer waste. Rain does not freshen the Dead Sea, but only enables it to dissolve more salt.

I am always trying to 'preserve' things by getting other people to read what I have written, and feel what I felt.

The thing about opium is that it makes pain or difficulty unimaginable.

The more you say goodbye, the stupider you’ll feel when we’re blitzed as bats at the victory party.

Some people help thousands of people directly, like Marie Curie or Susan B. Anthony. Others help us by inspiring us, like Amelia Earhart. But you do have to help someone.

Forever bound to one another.

Women who are too easy to attract are perceived as less desirable.

There's not much practical Christianity in the man who lives on better terms with angels and seraphs than with his children, servants and neighbours.

Letters are among the most significant memorial a person can leave behind them.

Because the New Testament provides the primary historical source for information on the resurrection, many critics during the 19th century attacked the reliability of these biblical documents.

At some point, we realize that what we do for ourselves benefits others, and what we do for others benefits us.