Jews are not fit for Heaven, but on earth they are most useful.
Science is properly more scrupulous than dogma. Dogma gives a charter to mistake, but the very breath of science is a contest with mistake, and must keep the conscience alive.
Genius at first is little more than a great capacity for receiving discipline.
Plainness has its peculiar temptations and vices quite as much as beauty.
In high vengeance there is noble scorn.
It will never rain roses: when we want to have more roses we must plant more trees.