Genius is only a greater aptitude for patience.

"The discoveries that one can make with the microscope amount to very little, for one sees with the mind's eye and without the microscope the real existence of all these little beings."

The human mind cannot create anything. It produces nothing until having been fertilized by experience and meditation; its acquisitions are the germs of its production.

These things [subject matter] are external to the man; style is the man.

Never think that God's delays are God's denials. Hold on; hold fast; hold out. Patience is genius.