"Careful with fire" is good advice we know."Careful with words" is ten times doubly so. - William Carleton
He doubly benefits the needy who gives quickly. - Publilius Syrus
A successful lie is doubly a lie; an error which has to be corrected is a heavier burden than the truth. - Dag Hammarskjold
The passing of an ordinary man is sad. The passing of a great man is tragic, and doubly tragic when the greatness passes before the man does.
Lolita is famous, not I. I am an obscure, doubly obscure, novelist with an unpronounceable name. - Vladimir Nabokov
Act correctly. Incorrect action cannot be justified by incorrect action. An incorrect action taken to cover an incorrect action is doubly incorrect. - Compton Gage
Time is an illusion. Lunchtime doubly so. - Douglas Adams
Power always has to be kept in check; power exercised in secret, especially under the cloak of national security, is doubly dangerous.
Who feels no ills, should, therefore, fear them; and when fortune smiles, be doubly cautious, lest destruction come remorseless on him, and he fall unpitied. - Sophocles
Frantic orthodoxy is never rooted in faith but in doubt. It is when we are unsure that we are doubly sure. - Reinhold Niebuhr
The truth is always an abyss. One must — as in a swimming pool — dare to dive from the quivering springboard of trivial everyday experience and sink into the depths, in order to later rise again — laughing and fighting for breath — to the now doubly illuminated surface of things. - Franz Kafka