All progress is experimental.

The power of quotation is as dreadful a weapon as any which the human intellect can forge.

Nothing is more injurious to the character and to the intellect than the suppression of a generous emotion.

Wherever you see a man who gives someone else's corruption, someone else's prejudice as a reason for not taking action himself, you see a cog in The Machine that governs us.

Benevolence alone will not make a teacher, nor will learning alone do it. The gift of teaching is a peculiar talent, and implies a need and a craving in the teacher himself.

People get so in the habit of worry that if you save them from drowning and put them on a bank to dry in the sun with hot chocolate and muffins they wonder whether they are catching cold.

Attack another's rights and you destroy your own.