Degree is much: the whole Atlantic might be lukewarm and never boil us a potato.

Dumbness and silence are two different things.

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

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

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

Error held as truth has much the effect of truth. In politics and religion this fact upsets many confident predictions.

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