Whatever evil voices may rage, Science, secure among the powers that are eternal, will do her work and be blessed.

The results of political changes are hardly ever those which their friends hope or their foes fear.

Let us have "sweet girl graduates" by all means. They will be none the less sweet for a little wisdom; and the "golden hair" will not curl less gracefully outside the head by reason of there being brains within.

The improver of natural knowledge absolutely refuses to acknowledge authority, as such. For him, skepticism is the highest of duties; blind faith the one unpardonable sin.

A man's worst difficulties begin when he is able to do as he likes.

Only one absolute certainty is possible to man, namely that at any given moment the feeling which he has exists.

The rung of a ladder was never meant to rest upon, but only to hold a man's foot long enough to enable him to put the other somewhat higher.