In business for yourself, not by yourself.
No living person is sunk so low as not to be imitated by somebody.
Our esteem for facts has not neutralized in us all religiousness. It is itself almost religious. Our scientific temper is devout.
The art of being wise is the art of knowing what to overlook.
When once a decision is reached and execution is the order of the day, dismiss absolutely all responsibility and care about the outcome.
To spend life for something which outlasts it.