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

Evolution pays and that is why there is evolution

We despair of changing the habits of men, still we would alter institutions, the habits of millions of men.

They will listen with both ears to what is said by the men just a step or two ahead of them, who stand nearest to them, and within arm's reach. A guide ceases to be of any use when he strides so far ahead as to be hidden by the curvature of the earth.

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

Is any knowledge worthless? Try to think of an example.

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