Assasination on the scaffold is the worst form of assasination, because there it is invested with the approval of society.

All problems are finally scientific problems.

Some people look at the world and say 'why?' Some people look at the world and say 'why not?'

He never does a proper thing without giving an improper reason for it.

What right has any human being to talk of bringing up a child? You do not bring up a tree or a plant. It brings itself up. You have to give it a fair chance by tilling the soil.

A nap, my friend, is a brief period of sleep which overtakes superannuated persons when they endeavor to entertain unwelcome visitors or to listen to scientific lectures.

Marriage is popular because it combines the maximum of temptation with the maximum of opportunity.