A presentation copy...is a copy of a book whoch does not sell, sent you by the author, with his foolish autograph at the beginning of it; for which, … - Charles Lamb

I have indeed lived nominally fifty years, but deduct out of them the hours which I have lived to other people, and not to myself, and you will find me still a young fellow. For that is the only true time, which a man can properly call his own, that which he has all to himself; the rest, though in some sense he may be said to live it, is other people's time, not his. The remnant of my poor days, long or short, is at least multiplied for me three-fold. My ten next years, if I stretch so far, will be as long as any preceding thirty.

I have been trying all my life to like Scotchmen, and am obliged to desist from the experiment in despair.

The mixture spoils two good things, as Charles Lamb (Elia) used to say of brandy and water.