Philosophy begins when you don't know where to look for an answer.
When something needs to be said, you look for a man to say it. But when something needs actually to be done, you look for a woman.
May the saddest day of your future be no worse than the happiest day of your past.
To grant all a man's wishes is to take away his dreams and ambitions. Life is only worth living if you have something to strive for. To aim at.
Sometimes human nature can leave you looking just a little shamefaced.
A man's bookseller should keep his confidence, like his physician. What can become of a world where every man knows what another man reads? Why, sir, books would become like quacks' potions, with every mountebank in the newspapers claiming one volume's superiority over another.