Keep your eyes wide open before marriage, half shut afterwards.

I think also, that general virtue is more probably to be expected and obtained from the education of youth, than from exhortations of adult persons; bad habits and vices of the mind being, like diseases of the body, more easily prevented than cured. I think moreover, that talents for the education of youth are the gift of God; and that he on whom they are bestowed, whenever a way is opened for use of them, is as strongly called as if he heard a voice from heaven.

Chess teaches foresight, by having to plan ahead; vigilance, by having to keep watch over the whole chess board; caution, by having to restrain ourselves from making hasty moves; and finally, we learn from chess the greatest maxim in life - that even when everything seems to be going badly for us we should not lose heart, but always hoping for a change for the better, steadfastly continue searching for the solutions to our problems.

The man who does things makes mistakes, but he doesn't make the biggest mistake of all-doing nothing.

He that is of the opinion money will do everything may well be suspected of doing everything for money.

Never contradict anybody.

To the haranguers of the populace among the ancients, succeed among the moderns your writers of political pamphlets and news-papers, and your coffee-house talkers.