Purpose, and to be thoroughly wedded to that purpose, is three quarters of salvation.
The safest words are always those which bring us most directly to facts.
Laws of Nature are God's thoughts thinking themselves out in the orbs and the tides.
Every thought was once a poem.
Science is busy with the hither-end of things, not the thither-end.
A man's longest purposes will be his best purposes. It is true, life is short and uncertain; but it is better to live on the short arc of a large circle than to describe the whole circumference of a small circle.