Evolution pays and that is why there is evolution
A superstition is a premature explanation that overstays its time.
Degree is much: the whole Atlantic might be lukewarm and never boil us a potato.
Dumbness and silence are two different things.
When a learner, in the fullness of his powers, comes to great truths unstaled by premature familiarity, he rejoices in the lateness of his lessons.
Doubt is the beginning, not the end, of wisdom.