The heart has its reasons of which reason knows nothing.

The eternal silence of these infinite spaces terrifies me.

All the unhappiness of men comes from one thing — they do not know how to stay quietly in a room.

Learning without thought is labor lost; thought without learning is perilous.

-- Confucius

Do not fear to be eccentric in opinion, for every opinion now accepted was once eccentric.

-- Bertrand Russell

A great many people think they are thinking when they are merely rearranging their prejudices.

-- William James

The sad truth is that most evil is done by people who never make up their minds to be good or evil.

-- Hannah Arendt