Thomas Huxley

There is no greater mistake than the hasty conclusion that opinions are worthless because they are badly argued.

Every great advance in natural knowledge has involved the absolute rejection of authority.

Veracity is the heart of morality.

The only medicine for suffering, crime, and all the other woes of mankind, is wisdom.

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.

Patience and tenacity of purpose are worth more than twice their weight in cleverness.

Every great advance in natural knowledge has involved the absolute rejection of authority.

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.

Science is nothing but trained and organized common sense, differing from the latter only as a veteran may differ from a raw recruit: and its methods differ from those of common sense only as far as the guardsman's cut and thrust differ from the manner in which a savage wields his club.

The great tragedy of Science - the slaying of a beautiful hypothesis by an ugly fact.