Fortune favours fools. [ Proverb ]

Favours unused are favours abused. [ Scotch Proverb ]

They enhance their favours by their words. [ Plin ]

Gratitude is a keen sense of favours to come. [ Talleyrand ]

Favours injudiciously conferred I reckon evils. [ Cicero ]

From great folks great favours are to be expected. [ Cervantes ]

Great minds, like Heaven, are pleased in doing good,
Though the ungrateful subjects of their favours
Are barren in return. [ Rowe ]

I have heard they are the most lewd impostors,
Made of all terms and shreds, no less beliers
Of great men's favours than their own vile medicines,
Which they will utter upon monstrous oaths;
Selling that drug for two pence ere they part.
Which they have valued at twelve crowns before. [ Ben Jonson ]

He receives most favours who knows how to return them. [ Publius Syrus ]

Favours, and especially pecuniary ones, are generally fatal to friendship. [ Hor. Smith ]

Personal attachment is no fit ground for public conduct, and those who declare they will take care of the rights of the sovereign because they have received favours at his hand, betray a little mind and warrant the conclusion that if they did not receive those favours they would be less mindful of their duties, and act with less zeal for his interest. [ C. Fox ]