Take heed of critics even when they are not fair; resist them even when they are.

Greatness, in order to gain recognition, must all too often consent to ape greatness.

Far too often the choices reality proposes are such as to take away one's taste for choosing.

Renown? I've already got more of it than those I respect, and will never have as much as those for whom I feel contempt.

Marriage simplifies life and complicates the day.

There are moments when very little truth would be enough to shape opinion. One might be hated at extremely low cost.

It is sometimes important for science to know how to forget the things she is surest of.