A thought is often original, though you have uttered it a hundred times.

A witty saying proves nothing.

After all, all he did was string together a lot of old, well-known quotations.

Be careful with quotations, you can damn anything.

Classical quotation is the parole of literary men all over the world.

Every one that useth proverbs shall use this proverb against thee.

Every quotation contributes something to the stability or enlargement of the language.

For every one that useth milk is unskilful in the word of righteousness: for he is a babe.

He wrapped himself in quotations- as a beggar would enfold himself in the purple of Emperors.

I am reminded of the professor who, in his declining hours, was asked by his devoted pupils for his final counsel. He replied, 'Verify your quotations. '